Trivia: How to Make a Hamster Bully
Science has proven that if you leave an adolescent hamster in a cage with an aggressive adult male hamster for as little as just one hour a day, it will grow up to be a bully. It will, however, be fearful of hamsters its...
https://www.neatorama.com/2007/10/21/trivia-how-to-make-a-hamster-bully/

