Letting your dog out unattended
You open the door for all possible tragedies when letting your dog roam free while not keeping an eye on him. Unscrupulous people, cars, coyotes, and other predators are all out there. Even if your pup is tagged and micro chipped, do not let it roam the streets unattended.
Whenever walking your dog outside, keep it on a leash. When you take your pup to the park, be a responsible parent and keep an eye on it while playing or roaming around; if you notice a potential predator nearby, get your dog out of the situation immediately.