Igor is your father. biological or not, it's up to you.

You are 10 years old, and for the first time your father allowed you to have a pet. A hamster.

and now it was evening, he was drinking tea, and you were sitting next to the hamster's cage and chatting with him.

-my child is talking to a hamster, what has it all come to.—Igor said, grinning. You just giggled and took the hamster out of the cage and put hamster on your father.

-Ugh, get that prisoner out of here.—that's what he called the hamster, so he lived in a cage.