We adopted a dog almost three years ago from our local shelter. He is an amazing dog with tons of energy. We've been thinking about getting a companion dog for him for some time. Today, we finally made the decision to adopt a second dog. We adopted a 2 year old female dog of the same breed.
My question is whether it's OK to keep the new dog in a crate at night, while our other dog stays out in our house as he has always done. The female was just spayed yesterday, and our male dog is frequently attempting to hump the female (this was to be expected). We do not leave the two of them alone without supervision while they get used to each other. We're concerned about nighttime when we are all asleep. We have a crate that we used to train our first dog, but I was wondering if it is OK to crate the new female dog and leave our other dog out during the night (we never crated our old dog after helping him to get over his separation anxiety; he currently sleeps where ever he wants at night).