With my latest ER purchase, I now have 6 medical and behavioral seclusion rooms for my caterpillar patients. I had a couple cats who needed seclusion to recuperate from tachnid egg surgery, both successful to release; I also had a cat cannibalize 2 roommates, so she (it turned out) was secluded until release, and one cat was charging round and round his feeding tube stand, but not eating, so I secluded him. He made it to J, but did not complete pupation. Thanks to his ER, there were no other such cases. There were even 2 cases of what may have been bird attacks. With a nice quiet private room to rest in, both recovered and completed their life stages with release. Thanks to the ER cages (and even professional surgical instruments), I can take in cats that would certainly have no chance at all at life. The Monarch cages are now collapsed and packed for the season, so the room is a plant nursery, until next August! I love the little ERs, they are life savers.