1. This is Misha's cat. His name is Pafnutiy. Но, я думаю, лучше использовать "its". Так как в английском языке у животных "нет пола". Используется местоимение "it" ко всем животным. Нам так говорили...
This is Misha's sister.Her name is Masha.
This is Misha's mother.She is happy.
This is Misha's father. He is not very happy
This is Misha's town.It isn't very big.
This is Misha's my family.We are on holidays.
Hi,Peter! You are late.
These are Misha's friends. Their ball is new.