Coming up, fat camp for your pets. The growing fad for pet parents concerned about the health of their fourlegged friends. Watching world news now. . Of their fourlegged friends. Youre watching world news now. . News now. Friends. Youre watching world news who let the dogs out . Oh. Who let the dogs out . Who let the dogs out . . Who let the dogs out . There you go. . Who let the dogs out . Took a while to get to it. What is that . You know whats funny . You have a problem with the Cabbage Patch . This song played at my sisters wedding. And no one remembers what the wedding song was. The only song that anyone thinks of when they think of her wedding is who let the dogs we know that obesity is on the out. Rise around the world. And the obesity epidemic isnt just limited to humans any more. Seems like our pets are packing on the pounds, as well. Were up all nightline with reporter in my hometown, los angeles, pet health is exploding. Doggy crossfit. Try to keep that butt nice and steady, low to the ground. Dogs do nothing. Reporter and theres doga. Pretty impressive, right . Dog yoga. Its been powerful for me and peanut butter. She has allergies and a little anxiety. Reporter must confess, the experience is rather lovely. Just take your right hand up and over. And stretch. Reporter look at me. Whoops a daisy. Got a little wobbly down there. Sous cheffing at a Beverly Hills eatery. Is it like a savory sauce . Its a secret. Reporter the choice of lamb or beef tartar. Chia seeds and fish skin garnish. This looks lovely. The dogs are going to come in and scarf. The paw bar here at pussy and pooch is in the vanguard. Compliments to the chef . Good . Bad . A little too much sauce . Your manners are atrocious. Grainfree is a popular trend right now. Glutenfree. Gmos. Its about what youre eating and putting in your body. Pet nutrition is a global conversation piece. Reporter half of our dogs and cats are overweight or obese. What are we working with here . A yogurt icing. Reporter doggy dessert. You can have a little taste, if you like. Very edible. Reporter a little dog foody. Not too bad. If its good enough for you, its good enough for your pet. Reporter is bad for you, typically bad for your pet . Yes. Reporter upstairs, theyre burning it off. This is a pet lifestyle center. Reporter pet lifestyle ahead of the curve in settling trends. Reporter theyre eating right. Feeling right. And feeling good about themselves. Its ridiculous. But its beautiful. It is beautiful. Theyre very wellmade. Reporter and theres a catwalk. Get it . Reporter what is romeo romeo has on a harness, thats leather. Little gold mesh. Reporter do you like your vest . Does it make you feel good about yourself . You put in the hours at the gym, youre eating right, flaunt it, romeo. We will spend 60 billion total on our pets this year. Thats up 75 from the year 2000. Im nick watt for nightline, in Beverly Hills. Isnt it easier to feed your pets the recommended portions of food. And you go for a run with the pet. Theres no fun with that. No . No. Obesity. Theres no fun with that. No . No. s no fun with that. No . No. Start the interview with a firm handshake. Ay,no dont do that try head shoulders instant relief. It cools on contact, and also keeps you 100 flake free. Introducing new ky touch gel cr . Me. For massage and intimacy. Every touch, gently intensified. A little touch is all it takes. Ky touch. Hi, im here with some advice from the future dont buy makeup that settles into lines, it ages you. Get simply ageless makeup it floats over lines and you look beautiful simply ageless from olay. And easy, breezy, if youre taking prescription medications, does your mouth often feel dry . A dry mouth can cause cavities and bad breath. Over 400 medications can cause a dry mouth. Thats why theres biotene. Biotene can provide soothing dry mouth relief. And it keeps your mouth refreshed too. 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The live broadcast going to commercial break as a few demonstrators protested swimmer ryan lochte. We had to go to break because we had a little incident. . Reporter and in our first glimpse into the cast of 13s ballroom skills. The jive, marilu henner. Fault full of energy. . Boy, you make me feel so tired . Marcia brady actress, maureen mccormick, glided across the floor in a vianese waltz, along with Country Music star jana cramer. . You make me feel like a dangerous woman . Fox trotting, james hinchcliffe, musician baby face. . I said honey . You looked right at home here. Reporter model amber rose. And olympic swimmer ryan lochte. Chachaing across the ballroom, former nfl star Calvin Johnson jr. The brightest and most seen. Reporter former governor rick perry. And vanilla ice dancing to what else . Ice, ice baby. . Also dancing the chacha, laurie hernandez. After the broadcast, its up to the viewers, casting votes online and by phone. This week, no one is eliminated. Kendis and diane . All right, lauren. Thanks. Im surprised that vanilla ice baby. I thought they would build up more anticipation for that. He has a big discography. Including ninja rap. . Go, ninja, go, ninja, go. In our crews were fast and first to the scene near the 95 and stewart. We were there before firefighters even got a chance to put the fire out. Firefighters say the fire started in the backyard. Fortunatel y no one was injured. No word on what caused the fire. 13 action News ReporterMarissa Kynaston is headed to that scene right now. Shell have a live report at five. stacey moser, mom how they responded, it just makes me feel like knowledge,or they are hiding something this morning students at Walter Johnson junior high will be back in school after missing three days of class. School officials and the epa say the mercury is gone but many parents are still concerned they dont have all the information. Many say they dont want their child to go back. I still dont know if theyre safe, because they still havent said who brought it. The mercury spill was first