I just got to 85 less than a week ago and already my 25 total pet slots are full. I'm a BM hunter so of course I love to hunt for rares. Last weekend I got lucky, snagging all 5 rare spiders and Karkin from Molten Front, Ankha, Ghostcrawler, Sambas, Karoma, the "fire spirit" cat and "earth spirit" gorilla from stranglethorn, that rare white chimaera...added to the rares I had at level 80 I'm overloaded. I think we should get at least 50 slots total, given the fact that there will be plenty more rares coming in 4.3 and 5.0. It would be a shame to have to abandon all of my rares just because I'm out of space for the new ones.