kuja

1. bitch; female dog
   Naša kuja je dobila šest štenaca. — Our female dog had six puppies.
2. vulg. derog. (of a woman) bitch
   Kakva kuja, slagala me je u lice! — What a bitch, she lied to my face!

Said of a person it is a strong insult; of a dog it is neutral.