We got our two Pygmy does at about 9-10 weeks old. They are now about 4.5 months. One did get sick about 10 days after she came home - diarrhea, got very thin very fast. Turned out to be cocci, which was treated with an antibiotic. They can get overloaded with worms and / cocci from the stress of weaning and moving to a new place. So, have a vet who KNOWS goats available just in case. This forum has lots of good advice too.