Rainbow Daydreamer last year made a list of wintery pets we haven't gotten yet, and I thought I'd continue it here. So, last year we got the Christmas Chomby around Christmas.
For Snow we got:
Draik
Kyrii
Lupe
Ogrin
For Ice we got:
Cybunny
Tonu
Using Rainbow Daydreamer's info, here are the pets left without the wintery colours of Christmas, Snow, and Ice:
Pets that currently do not have a Christmas colour:
Hissi
Jetsam
Krawk
Lutari
Poogle
Xweetok
Pets that currently do not have a Snow colour:
Gnorbu
Hissi
Jubjub
Kau
Koi
Korbat
Krawk
Lenny
Lutari
Meerca
Nimmo
Ruki
Scorchio