Stray dogs in the forest
Canis familiaris - Dog - собака
A patch of forest near the Novosibirsk State University has been a home for a pack of stray dogs for years. I met them sunbathing on a trail a few days ago.
There were reports of them biting people, however, in my experience, pet dogs in that forest are way more agressive and dangerous than stray dogs because their owners train them poorly if at all and let them run unleashed.