Chihuahuas are known for their affectionate, playful personalities.
They often form very strong bonds with their owner, using their intelligence to pick up unusual tricks.
"The definition of reciprocation"
"This is the definition of reciprocation", explains the little dog's owner, sharing a clip to Instagram.
"Watch this", he can be heard saying, before he starts scratching his beloved Chihuahua's back. She clearly loves the attention, and as soon as her owner stops, she's ready to return the favour.
Her owner turns away from the little dog, at which point she starts scratching his back for him.
A beautiful bond
"This is such a smart dog", commented a viewer.
Others were left perplexed by the clip. "The audio sounds crazy if you don't know what's going on", joked another.
And while the audio may be amusing, it seems the pair's cute connection has touched the hearts of dog lovers around the world.
"They really have a special bond", wrote a fan. "I love this man's content with his babies".