Greenville, South Carolina - A few days ago, Teddy the Golden Retriever dog became a big brother when his owner Jonathan presented him with the latest addition to the family, little Ruby!

In a video that has since been shared on TikTok, the dogs' owner can be seen carrying the little Golden Retriever puppy over to meet Teddy for the first time.

The adult dog reacts enthusiastically and instantly drops his toy to play with her.

He then sniffs her lovingly, gives her a few first kisses, and then even offers her his favorite cuddly toy – a little Lambchop doll.

Dogs Baby and Great Dane puppy grow up together in heartwarming video

Both dogs' tails are wagging with joy the whole time. Aww!

Little Ruby definitely can't contain her enthusiasm, jumping up again and again onto her big brother and snuggling into his soft fur.

"Immediate best friends," Jonathan enthuses in the onscreen text of the video.

Afterward, Teddy and the little one make themselves comfortable on the family's couch and close their eyes contentedly to recover from all the excitement.

Although most viewers reacted enthusiastically to the cute clip, many were disappointed to see that their other adult dog Archie was missing from the video!

However, Jonathan was quick to reassure his followers that Archie really likes Ruby, too.

"Archie likes her too but he's a little more socially awkward with dogs, so we're taking baby steps," the owner explained in a comment on the initial video.