Hey, friend! Check out this page for some interesting info! Disney seems to have had a major hand in perpetuating this falsehood. Apparently, per the link,

https://www.snopes.com/fact-check/white-wilderness-lemming-suicide/

“It’s a frequent question,” he said “‘Do they really kill themselves?’ No. The answer is unequivocal, no they don’t.”

When I grow up I want to be a principal, or a caterpillar.