My little homeless friends

When I went to a shop last week,I found a cat. It lay laid on a cold stone and there were 4 kittens near it. They were so small and they all shivered with cold. I took they in them to my flat, where cat-mummy brought into life 2 kittens more the mother cat gave birth to 2 more kittens and then fell asleep. My neighbours wanted to kill they but I didn't let it them. This offer was disgusting for me. People mustn't kill whoever - doesn't matter - anyone, no matter it is kitten or man etc. or some thing else. We are stronger then animals and more powerful, but our power is our liability. Why some people forgot forget it? We can give them a happy life, we can help them. So many cats and dogs need us, they will die without our care if we don't care them.
Yesterday one of my new friends opened it's eyes. They all are so cute. I'm sure I will find a new happy home for each of they them.

My little homeless friends

I went to a shop last week and found a cat. It lay on the cold stone and there were 4 kittens near it. They were so small and they all shivered with cold(coldness). I took they(hem) in my flat, where cat-mummy brought into life 2 kittens more and then fell asleep. My neighbours wanted to kill they(them) but I didn't let it. This offer was disgusting for me. People mustn't kill whoever - doesn't matter - kitten, man, etc. We are stronger and more powerful then(than) animals , but our power is our liability. Why（do) some people forgot it? We can give them a happy life, we can help them. So many cats and dogs need us, they will die without our care.
Yesterday one of my new friends opened it's(its) eyes. They all are so cute. I'm sure I will find a new happy home for each of they.

(Although my English is not very good,I think you made some mistakes in

personal pronouns.By the way,I agree with your ideas.)