Really hypothetical question....we are playing with the idea of possibly getting another dog, Lexi is a 2 year old staffie and i would really look to get a male border terrier or some form of terrier pup. Breed to be confirmed. But i have a few questions, Lexi is dog friendly but we have never had another dog in the house she is very spoilt and a mummy and daddys girl, how do you introduce a new puppy? Especially considering the size difference? Also, we crate trained Lexi as a pup but she now just sleeps on a bed in the kitchen, can i put the pup in a crate without her being in a crate? Another advice on getting a second dog?