I don't really try to breed for permanent animals, I usually just get them as I try to breed for limited time animals or for event goals etc. I've been playing since about last year this time and from my forest I am missing: Reckless Roc, Sea Horse ( I've never bred it but I technically have 2 in storage from past spin to wins) Cosmic Phoenix, Ladypug, Cursed Rose, Spruce Moose, Lunar Moth, Eagle Beagle, Catypuss, Aurora Pegasus, Shockatoo, Stom Sphinx, Punk Skunk, and Zapra. I guess I'm lacking in the dark and lightening animals the most. I figure I'll get them eventually as I play if they don't retire them from the permanent line lol