"We have three dogs in total, and he was the one I was most nervous about in the beginning," Diesel's owner told Newsweek.

Okay, this spry Golden Retriever is far from being 'old,' but his never-ending affinity for learning is inspiring for pups of ...

Joe Nutkins, a Kennel Club-accredited dog trainer, shared three key tips with Newsweek to help canines adjust to their new homes.