Here's some links with some information beside them so you know exactly what you'll find.
ADB Petz Adoptions and Shows. Petz 3+
Amenity Adoptions. Petz 3+
April Showers Adoptions and Shows. Tamsins and Hexies. Petz 4
Cargo Shows and Adoptions. Lots of MPA's. Petz 3+
Capricious Shows and Adoptions. Petz 4
Socks I love her adoptions! I get about 80% of my adopted petz from there.