Snakes, notably rattlesnakes, may become more visible along some East Bay park trails due to the summer heat warming up the region. Snakes typically emerge in warm weather to explore their environment, which can lead to more encounters with humans and dogs, according to the East Bay Regional Park District. | Snakes, notably rattlesnakes, may become more visible along some East Bay park trails due to the summer heat warming up the region. Snakes typically emerge in warm weather to explore their environment, which can lead to more encounters with humans and dogs, according to the East Bay Regional Park District. Due to this, the Park