Stage fright. A chilling interruption during tonights dancing with the stars premiere. Excuse me hey, back off two men crashing the dance floor towards olympic Gold Medalist ryan lochte. Tackled and removed by security. Lochtes reaction and the video. But first the nightline 5. . Take on any road with intuitive allwheel drive. Get 0 apr for 72 months plus 500 bonus cash. Number one in just 60 good evening. Thanks for joining us. Hillary clinton facing political backlash tonight over whats being called her lack of transparency after revealing her previously undisclosed pneumonia diagnosis. This after weeks of the clinton camp dismissing concerns about her health as conspiracy theories. Heres abcs david wright on how this will im t reporter its not just the fact that she stumbled or worse that makes this the news worthy. Consider the time and place. Ground zero on the 15th anniversary of 9 11. Hillary clinton and donald trump both there to project strength and resolve after the worst terror attack ever on american soil. An attack that hit close to home for both of them. The world is watching. So for clinton to abruptly leave then to appear to nearly collapse, thats bound to be a very big deal. New questions tonight about Hillary Clintons health. Moments ago because of some apparent medical episode i just didnt think it was going to be that big a deal. Reporter tonight clinton called in to Anderson Cooper to clear things up. A lot of folks are worried about you, how are you feeling . Thank you, anderson, im feeling so much better. Gotten some rest sooner. I probably would have been better off if id just pulled down my schedule on friday. Reporter but the damage was done. After clinton left ground zero it took her aides 90 minutes to issue a statement that she felt overheated during the ceremony and decided to head over to her daughter chelseas manhattan apartment. Less than an hour after that, she emerged, still in sunglasses, but all smiles, ignoring reporters questions as great, great what happened . Its a Beautiful Day in new york. Reporter she even becaused to hug a little girl who ran up to greet her. Then she cheerfully said her goodbyes and zoomed home for the rest of the day. Five hours later, another statement. This time from her doctor, revealing that she was diagnosed friday with pneumonia. Now knowing that she has pneumonia, should she be hugging that child in the street . Different types of pneumonia. Some of them are contagious, most of them are not. Reporter even so, today senator chuck schumer, who stood next to her at ground zero, said he now has pneumonia. The Campaign Said a number of staffers have been stricken. The bug going around. Clinton now following her Doctors Orders cut back on her schedule. And tweeted tonight, like anyone whos ever been homesick from work, im just anxious to get hello, everybody reporter today donald trump appeared to take clinton at her word. I just hope she gets well and gets back on the trail. And well be seeing here at the debate. Reporter but for weeks now his campaign has been sowing doubts about her physical stamina. She doesnt have the strength or the stamina to make America Great again. Believe me. Reporter citing her persistent cough that flared up again a week ago every time i think about trump, i get allergic. Reporter today, given her campaigns shifting stories, some tough love from a fellow democrat. Former obama strategist David Axelrod tweeted, antibiotics can take care of pneumonia, whats the clear for an unhealthy penchant for privacy that repeatedly creates unnecessary problems . I think its clear that the the shfallout has been question about transparency, honesty, trustworthiness. Reporter the good news for clinton is the health scare has taken focus off a comment she made friday night at a fundraiser. You could put half of trumps supporters into what i call the basket of deplorables. The racist, sexist, homophobic, xeno xenophobic, islam phobic, you name it. You cannot run for president if you have such contempt in your voter. And she does. Reporter but its the Health Care Issue now taking center stage. And not in the policy sense. Clinton has a history of being less than forthcoming on this issue. In 2012, when she was secretary of state, clinton fainted at home while suffering from a stomach bug, banging her head and suffering what aides first described as a minor concussion. Months later at a benghazi hearing, reporters noticed she only then did her aides revise their earlier disclosure admitting that the concussion was much more serious than they had previously admitted. Speaking with diane sawyer in 2014, clinton denied lasting damage. No lingering effects . No lingering effects. Of any kind . Nope, nope. Reporter but republicans have had a field day. Gop strategist karl rove among the first to suggest clinton had suffered some sort of traumatic brain injury. 2016 race, whether she likes it or not. . We came, we saw . Reporter others have taken it further. What on earth could be the reason behind Hillary Clintons bizarre behavior in recent weeks . Reporter this viral video, for instance, suggests everything from seizures to stds. Hillary on the verge of a mental breakdown due to stress. I think the armchair diagnosis, looking at a video does this mean the person has a seizure disorder . Does this have do they have a neurological problem . I think thats nuts. But its not going to stop people from doing it. Reporter neither candidate has released full results from a physical. Both put out short notes from their doctors. Both now promise a more detailed disclosure sometime later this week. Personally, as a voter, id like to know that a candidate is overall fit to be president. That they dont have a condition that will impair t to carry out that job. As a medical professional, i know that there are conditions people could have that will not have any bearing on that that they may not want to share with the public. I think thats peoples right to keep that information private. Reporter theres a rich history of president ial candidates concealing significant medical problems. Most americans had no idea fdr was confined to a wheelchair, thanks to a complicit press corps who agreed to play down jfk suffered from addisons disease, which can have impact on the bodys response to stress. And Ronald Reagans alzheimers did not become Public Knowledge until well after he left office. These are things that may have affect theed the elections. Should the public have known . I dont know. It makes Vice President ial vetting that much more important. It does make that more important. Hillary clinton is the most qualified person to run as president reporter tonight tim kaine prayed for clintons speedy recovery. But questions about her health are of the larger narrative about her lack of transparency. These questions about Hillary Clintons health and stamina were on the dark reaches of the Conspiracy Theory internet and now is front and center in the campaign. Reporter ironically, Hillary Clinton has been talking for years about stumbling. When youre knocked down, get right back up. Reporter in fact, stumbling and getting back up again those to the heart what was she says would make her a good president. Whether you get back up. Reporter after this episode, that challenge is now suddenly literal. Im david wright for nightline in new york. Up next, he aint heavy, hes my bulldog. Why some pet owners are sending their Furry Friends to fat camp. Later, a security scare at tonights dancing with the stars with infamous olympian dance floor. S back at red lobster. 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Are those meatballs still circulating . Get tv, internet and phone for 89. 99 per month. Only from time warner cable. Do you have a chubby chihuahua . A husky husky . Youre not alone. Pet obesity is on the rise. More and more, americans are sending their animals to camps to help them to go from fat to fit. Heres abcs nick watt. Its the only place that i would even consider sending her to. Reporter lisa is taking little aggie to summer camp in new jersey. But aggie isnt a kid, aggie is a golden retriever the animal in fat camp. People have said, its just a dog, why are you going to that extreme . And im like, because shes part of the family and i want her to be healthy and happy. Shes got the play package. Shell be outside doing all the different dog runs. Shell be out on the nature walk. Reporter well check back in with aggie, apparently lazy, in just a minute. But turns out lisa is far from attitude to her hounds wealth. We will spend 15 billion this year alone on our pets health. Whos excited to be here . Reporter in my hometown, los angeles, pet health is exploding. Doggie cross fit. Try to keep that butt steady, low to the ground the dogs doing nothing. Reporter yoga. Pretty impressive, huh . Reporter its to get yoga. Its been very powerful f she has allergies and a little anxiety and everything that breathes can use healing. Reporter must confess, the experience is rather lovely. Just take your right hand up and over. And stretch. Look at me. A little bit wobbly. Reporter sue cheffing at a Beverly Hills eatery. Whats in the sauce . A savory sauce . Its a secret. Reporter choice of lamb or i smeared that sauce. Fish skin garnish. This looks lovely but the dogs are just going to scarf. Reporter its not for lunching ladies. The bar here is in the vanguard. Compliments to the chef. Good, bad . A little too much sauce . Your table manners are pretty atrocious. Grain free is a popular trend right now. Gluten free. Gmos. Its a lot of how youre eating an pet nutrition is a global conversation piece. Reporter because more than half of our dogs and cats are, in fact, overweight or obese. This is a yogurt icing. A little Peanut Butter gnash. Reporter doggy dessert. Have a taste if you like. Very edible. A little dog foodie. Not bad. Thats the philosophy is if its good enough for you, it should be good enough for your typically, yes. Reporter upstairs theyre burning it off. This is a pet Lifestyle Center. Pet Lifestyle Center . Correct. Definitely ahead of the curve in setting trends. Reporter theyre all eating right. Exercising right. Feeling good about themselves. And py want to say, ridiculous. But its kind of beautiful. It is beautiful. Theyre very well made. Reporter yes, theres a catwalk. Get it . What is romeo wearing . Romeo has on a harness that is leather. A little gold matte mesh. Do you like your vest . Does it make you feel good about yourself . Reporter put in the hours at the gym, eating right, you deserve it. Flaunt it, romeo, flaunt it. We will spend 60 billion total on our bets this. Pets this year, up 75 from the year 2000. Meanwhile, back at the morris ranges between 75 and 160 for a days treatment and a nights stay. Turns out aggie really is a little lazy. Dogs need exercise. They need to stay active. In order to be healthy. So theyre not destructive at home. Reporter and aggies a nervous swimmer. Needs a life vest. And theres an aqua agility test at the end of the week. Will she pass . Is all this really necessary . Pet owners, theyre very busy. I know a lot of us its very hard for us to make sure that their dogs get the exercise that they need. Its very important. Because you want them to live a long life. Reporter you know those wrist bands, fit bits that tell humans how active theyre being . Max kruger has one. I wound up losing around 50 pounds. Reporter yep. Now they exist for pooches too. And maxs little pal tucker wears one. When it came out, probably 12 or 14 of my friends sent me the link. And im like, look, i already cool. Reporter help max bust the dog walker for slacking off. Tucker was supposed to be out a whole hour at a time. His Activity Tracker were register hed been moving for maybe 10 minutes. So we looked into getting another walker. Reporter back in jersey, aggie sans life vest aced the swimming test. Now shes jumping off the side, she doesnt need a life jacket at all. And she has imes reporter lisa is here to take her home. Im going to go give her a big hug and kiss. Are you excited to see her . So excited to see her. Oh my goodness hi, sweetie oh my goodness she loved her treadmill. She loved the treadmill . Reporter does anyone really love the treadmill . Really . Im nick watt for nightline in Beverly Hills. Remember, real wheatons have curves. Dancing with the stars topsy toursy tonight. An alarming incident puts ryan lochte at risk. Im claudine and i quit smoking with chantix. By the time i was 30, i said thats it, im a smoker for life. I wanted to be a nonsmoker and i did it Chantix Varenicline is proven to help people quit smoking. Chantix reduced my urge to smoke some people had changes in behavior, thinking or mood, hostility, agitation, depressed mood and suicidal thoughts or actions while taking or after stopping chantix. Some had seizures while taking chantix. If you have any of these, stop chantix and call your doctor right away. Tell your doctor about any history of Mental Health problems, which could get worse or of seizures. Dont take chantix if youve had a serious allergic or skin reaction to it. If you have these, stop chantix and call your ave heart or blood vessel problems, or develop new or worse symptoms. Get medical help right away if you have symptoms of a heart attack or stroke. Decrease alcohol use while taking chantix. Use caution when driving or operating machinery. Most common side effect is nausea. This is for real. Im a nonsmoker. Ask your doctor if chantix is right for you. . . Take on any road with intuitive allwheel drive. The nissan rogue, murano and pathfinder. Now get 0 apr for 72 months, earlier tonight, olympic Gold Medalist ryan lochte trying to move on from his notorious incident in rio is catching his breath tonight after an ugly encounter on dancing with the stars. On tonights season dancing with the stars, it was lights, cameras and a whole lot of action. . Excuse me hey, back off reporter while carrie ann was critiquing controversial olympic swimmer ryan lochte excuse me reporter two unauthorized men wearing antilochte shirts walked onstage. Offscreen. Lochte and cheryl burke appear shaken and host tom bergeron segues to commercial break. Well take a break, weve got the rest of the judges comments, take a deep breath, well be right back. Reporter what the Television Audience didnt see is the protesters being tackled by security. Excuse me Reporter Video of the incident was released by dancing with the stars after the show. I honestly dont know what happened. We were talking about it, we thought it was a protesters seen here in handcuffs telling abc news they were upset because they believed hed endangered americans with his disputed claims of being robbed at gunpoint in rio. According to the lapd, they were arrested and are facing misdemeanor charges of trespassing. After the show, lochte says hes focusing on the future. I came out here and i changed and i want to become a better person. I came out here, i did something reporter hoping there will be fewer missteps if he makes it onto the dance floor next week. Another round of headlines. Tune into Good Morning America for exclusive updates on the dancing with the stars drama. Thanks for watching abc news. As always were online at abcnews. Com and our Nightline Facebook page. Good night, america. A breakdown on live tv. I woke up in the hospital. And i knew nothing. Revealing to e. T. Why she went into hiding. Then, what it really takes to pull off a dancing with the stars premiere. I cant believe youre doing this. Backstage surprises, lastminute nerves. No cameras have been allowed to go this behind the scenes until now. Plus, were first on the set of John Travolta hitting the dance floor with his wife, kelly preston. We started that way. We met on screen. Right . A waitress . Orders up now, for september 12th, 2016, this is entertainment tonight. News from sharon osbourne. She dropped a bombshell secret today that she suffered an emotional breakdown. Then in 2015, sharon took time off from the talk. We were told it was for pneumonia. But today sharon told me the real reason. I had a complete and utter breakdown