I have 23 pigs, 5 butterflies, and 3 chickens. I use 4 meat collectors and 2 milkers. My meat collectors fill up very quickly... but I have not tried more than 4.
I have 25 pigs, 14 butterflies and 1 chicken in an Alakol pen, with 4 meat collectors and 3 milkers. It all seems to work fine. It may be that 40 animals is the limit. In the past, I've had 26 pigs, or 16 butterflies, but never managed to do both without overcrowding problems.
I'm at 30 critters in the 50K house. They've never complained. 18 piggies, 10 butterflies, 2 chickens. I use 2 milk, 3 meat collectors but I might add more. Some days I long log in once and I'm pretty sure I could fill more collectors even if they go more slowly.
Ty all for the responses as far as the 50K go I think we established at least 30 but for the 30k and the 10k still nothing. I checked all the 10k homes and the most i found was 13 pigs. I have no clue if that's the upper limit. If it is its right inline with Fire bogs Caves 4k and tree houses. that being said there is no way to know without testing the upper limits. If I get time later this week Ill try for 20 worse case scenario my block gets like 7 more pigs. I am also going ot visit the model home and see if the actual pen is bigger or just the houses.
On a funny not I found some sold 10k caves with no animals what so ever I find it funny because dont we spend the extra cash for the pen?