a swine (свине)
In nature, wolves and bears.
Insects are the most commonly seen animal in the desert.
cow
Probably pigeons.
The most common form of aggression seen most often in a animal hospital is fear aggression. The animal hospital is a scary place and can turn the most docile pet into a snarling, biting lunatic.
Walnuts, both domestic and wild are seen here in Bulgaria
lion
bulgarians for sure,Turkish Greeks as well,british now a days,macedonians serbians ,that's the most seen
Not a single. Not proved presence of UFO
National Football Team of Bulgaria
donkeys
That monkey is a clever animal. It jumps and climbs