your little guy sounds precious! congradulations . What I am thinking he has been somewhat neglected. having the long nails , overgrown hair, thin , and behaving very hungry, + the separation anxiety . He may not have had the social skills , or enough attention in his life . Now that he does he is not going to want to lose it ! He will be fine! Just give him time to settle in to his new home. I agree that placing that cat food up high , and not allowing your kitty access to the dog food will help the food agression. Especially to a dog who has not been fed so well .
He is not use to stairs, and does not know what to do with them, just yet. My Suzi does not go down stairs either. Which is a good thing. We live in a upstairs APT, and I do not want her going downstairs from outside. YAY for that miracle.
But in your case, I am sure your new boy will become comfortable as time goes by. He just came to a new home yesterday. Everything is so new. I would take him to your vet for a checkup . Just to make certain he is healthy. It looks like he was used for breeding only and not as a family pet. I am so happy he is going to be much better now , and content .
