I once pet sat for a catoo, a parrot, 2 cats, and 2 dogs in one household. Whew, was that a job of work…mostly the birds. Props to anyone who can do that. Mostly the cats only came around for food, my main problem with the dogs was trying to keep their muddy feet off the white carpet...but the birds...oh, the birds. Could hardly get my hand in the cage to get the bowls to feed them their (owner prescribed) fruit, veggies, and even peanut butter. The catoo wasn't bad, it was the parrot that was very territorial about it. I ended up using kitchen mitts to get the bowls out of the cage. I look back on it now and have a good laugh, but at the time those bites from the parrot hurt! But every now and again during that 2 week period the darned thing would just be cute, as would the c**atoo. The owners said I could even let them out of the cage if we (the birds & I) were comfortable enough, and by the end , we were. It was very neat. That whole multi-critter experience ranks right up there with both a major learning experience and an "I'm so verry glad I had it" experiance.
PS: the dogs were both German Shepherds.