Comments by Date (5)
Just farmed enough commissions for the crate. The rodents do in fact have a very quick respawn, and comes in 2 different colors as said by the other commenters.
Farmed for the full 20 mins, finally got a rare after 16min (had me worried for a bit), had the remaining time trying for a rare of the other color to no avail.
It seems there could be a maximum of 6 of them up at the same time, and they do stay up even when the duration of the crate runs out (although no more will spawn after that)
I have no problem finding quite a handful off these guys during offpeak hours (since CRZ is probably the only reason why these new pets look so rare). I have yet to find a rare within the 20 I've found though (sadface.
Even though it seems like some of them can spawn in place of the other critters/battle pets, I have actually found a few of them spawning right next to the critters/battle pets so they may not actually share spawns.