My parents gave up on ever having a daughter, so they gave the name Lucy to our last dog. (If they’d actually had a daughter, they say they would have named her Louisa and called her Lucy.) My mom almost immediately got pregnant, which gave them a good scare, but that ended up being my youngest brother.
Our current dog was named after a lot of debate, which I wasn’t really a part of. My mom wanted to give her a non-people name. She liked Scout. Nobody else agreed, and they ended up calling her Maggie. I don’t know what the inspiration for that was, but I think some other M names were also in the running and they lead to that.
My little brother names his fish as he pleases. For a while, the names all rhymed, and he really did go from Eddie to Teddy to Freddy in some order. Then he started naming them after musicians. He had a Bob, and probably a Marley even though I asked him not to, and a Derek and a Domino.