Their dad, known on Reddit by the username washburnmav, has had 2-year-old Sokka since he was a kitten, and adopted Tucker from Golden Beginnings Golden Retriever Rescue about a year later. He had no idea if they'd get along, so he made sure Sokka got a chance to scope out the dog first.
"Both animals had never met the other species before, so I knew it might be a challenge," their dad tells The Dodo. "Tucker's foster brought him to my house and that is where the fun began. Sokka was very cautious, moving at a sloth pace, to investigate this new four-legged, smelly animal."