My roommate brought home a tiny jack russell/dachsund 6 week old pup to the house. Nixie is 5 months now and the pup is about the size of her head. We've put crates next to each other so they can get used to each other but Nixie tends to still clamp her jaw around the puppy when they're together and be more aggressive than I would like. Am I just being paranoid? A part of me thinks that she's too young herself to understand her strength but are dogs like that?
Would appreciate any advice on the matter. Cheers!