It's pretty self-explanatory, but here's a rough translation anyway. (Includes spoilers!)
(When you view the cartoon, be sure to click on the blue Japanese text that has an arrow pointing at it in every scene (it means "Next"). It's not easy to click; you have to be right on top of the letters.)
Title: "Mr. Hamster was good at aikido"
"There once was a pink elephant."
Elephant: (trumpets)
"The pink elephant was very mean and was always picking on everyone."
Elephant: "Get out my way!"
Rabbit: "Wahh!"
"That's where little Mr. Hamster came along."
Elephant: "Mua hahaha ... Huh?!"
"Hey! Watch out!"
Elephant: "Get out of my way!"
"But it's OK."
Mr. Hamster: (clasp)
Elephant: "Eh?"
Mr. Hamster: (toss)
Elephant: "Eh?"
"Mr. Hamster turned out to be good at AIKIDO."
"The size of the body is irrelevant.
Anyone can do it through spiritual training.
Why don't you try aikido too?"
"The End."