three is great 4 is alot of work, I was not expecting my last eddition, she was a surprise gift, but she fit right in with rest, she cracks me up because she tries to do things they do and cant yet, as far as walking goes, i only walk one at a time for i can only pick one up, but having 4 is a pleasure, i love them all so much, i fell in love right away with molly, vet bills can be a bit high, i just pray everyday my kids stay healthy, i say go for it