I have a 14 month old Yorkie-NOT Alpha and a 7 1/2 y.o. Papillion, DEFINATLY Alpha!! I've had Baron for 8 months and they get along well now!! It took Sammy about 2 weeks to not want to eat Baron!!LOL I'm looking for another Yorkie or 2...They're both going to be female!! I've had enough Testosterone to last me a life time as well as Belly Bands!!! Good-Luck with your 2...