Buddy the Jack Russell Terrier loved being the only baby in his family. It meant he got all the cuddles and strokes he wanted and never had to share his pooch-parents with anyone else.
And then things changed. Buddy's dog mum gave birth to a baby girl called Allie, and the pampered pooch had to start waiting in line for his usual cuddles. So how did he react?
Buddy loves being the big brother
Well, Buddy didn't care! Because he was too busy falling in love with his new baby sister. He followed her everywhere, made sure she was always safe and even started teaching Allie a few important life lessons, including how to crawl.
A cute video posted by the pair's mum, Valerie Stevens-Scott, shows how the first lesson went. Little Allie does her best to crawl forward. But despite flapping her arms and legs like a champion, she hasn't quite mastered this crawling business.
Buddy circles behind his sister and gives her an encouraging little nudge. But Allie stays rooted to the spot. So, Buddy takes a different approach.
This is how you do it!
The super-smart pooch spreads himself out next to his sister, gives her a look that says, 'This is how you do it,' and then crawls across the carpet.
Allie looks mesmerised by Buddy as he swiftly moves past her. Then Allie looks like she's about to start after him, but the video ends.
The clip has over 19 million likes and Buddy received lots of praise for being such an excellent teacher. We can't wait to see how the rest of the lessons go!