Aw, I recently got a 3rd dog, so now I have a 4 yr old Silky Terrier, a 2 yr old Maltese, and an 8 month old Yorkie. (and a 2 yr old cat once my bf moved in) It's definitely a zoo here, but I wouldn't trade it for the world. All 4 of my babies are females, and tho it did take some time for them to get used to each other, they all seem to love each other now for the most part, and I think they like having each other to play with and keep each other company. I'd say 3 dogs is definitely harder than 2, but if you fall in love w/ one you "have to" have like I did, I say go for it