YOU SAID:

when i was like around ten years old i got a pet dog and it was like really short

INTO JAPANESE

私が10歳くらいの頃、ペットの犬を飼っていましたが、それは本当に短かったです

BACK INTO ENGLISH

I had a pet dog when I was about 10 and it was really short

INTO JAPANESE

私は10歳くらいの時にペットの犬を飼っていましたが、それは本当に背が低かったです

BACK INTO ENGLISH

I had a pet dog when I was about 10 and it was really short