I'm afraid that's all of the critters gone now, everyone, with S.M.I.L.E and Cupcake frosting getting the last two available. Sorry!
More will become available to adopt in a few days, hopefully along with a new species or two from the suggestions on the front page ^^
I've just now finished updating the boxes, so expect the code drops to be here in a few minutes ~
@ Saphira344 - Yes, transferring will very likely become an option at a later date, but not as of right now.
@ S.M.I.L.E - Details on how to get Coins should be coming up shortly, hopefully once I get the codes for today's newest boxes, if not, then tomorrow.