i've never seen beyaya, and i've rarely seen the holiday bear--a friend of mine who next to never plays has one, though.
i do wish the regular mini skeletons would come back, even for a limited time. when they did that whole 'we're bringing back a few limited pets!' i got overwhelmingly excited that the mini skeleton would be one of them.
also, i have a japanese bobtail, which apparently is a pet no one has ever seen putzing around before, as i've been asked about it.