"why didn't they have a cute mascot?"
hee! I always think it's funny when girls judge a SISTERHOOD on colors and mascots. I know if I wasn't fond of sailing I would have never have become a Tri Sigma (JK)

. Besides, soroities choose their mascots or symbols based on qualities or significance they want it to have for them. I would much rather have an owl for a mascot because of it's reputation for being wise (just an example) than a bunny just because it's cute!!!
(no one here has a bunny for a mascot do they?, if they do I'm sure that it has significance)