Not in the way you mean. I'm about to spoil something that happens in, like, the first 10% of the first book. The cat starts out an ordinary cat, but through dungeon logic becomes a sentient being who talks and functions like a person. So she is a full-fledged character/party member throughout, and as such participates in battles and the like. While also still being a cat. So no pet harm in the way you mean, but she is sometimes in danger. I'd be shocked to my socks if the books truly harmed her, though.