Here is the description from the Happy Tree Friends YouTube page:
Cute, cuddly, and horribly wrong.
That seems to sum it up nicely. Happy Tree Friends is a flash cartoon that has a cult like following on the internet. It has very cute little critters who get into the most violent situations you could think of. The Wikipedia website describes it very well when it says:
"As indicated on the official site, it is "not recommended for small children". Notwithstanding the somewhat childish shape of the series and the cute appearance of its characters, the show is extremely violent, with nearly every episode featuring blood, gore and extremely painful, bloody and gruesome deaths."
It's like when you pass an accident on the highway, you just have to slow down to watch. Maybe it's because the characters are soooo cute and the blood & guts soooo grizzy that makes it popular. Not sure. All I know is that I do keep coming back week after week to see the same little critters get hacked up. Not sure it that's good or bad. I'll have to think about it!