One of the very first things we would notice from simply observing street dogs is that actually they are rather inactive; the majority of their time is spent sleeping, resting, or otherwise being still, observing the world around them. You won’t see street dogs doing agility, racing each other to a finish line, or trotting around a show ring hoping for some compliments from the judge. These are hobbies we like to do with our pet dogs, but they are not things dogs would choose to do outside of the influence of humans.
According to a study* conducted on the activities of free-ranging dogs in India, as much as 53% of a dog’s day-time activities consisted of sleeping, resting or otherwise being still, i.e. they spend the majority of their time being inactive. Activities, such as standing, sniffing, inspecting, running, jumping, etc., accounted for 27% of the dogs’ day-time activities, with the most common activity being walking, accounting for almost half (48%) of all of their activities. The rest of their time was spent on maintenance/self-care (such as eating, drinking, grooming, scratching, toileting, etc.), interactions with other dogs and humans, vocalizations, and other activities.
Notice that aggression does not have a category of its own. That’s not to say that dogs never display aggression, because they do; they guard resources, or defend themselves or their families from threats, but it does indicate that dogs, even free-ranging, street dogs, are not aggressive by nature.