Twice the food, twice the poop...but it is fun...Toby girl is 6 yrs. old and we adopted 9mos. old Nemo, he was outside until we got him and we've had him for 1 month and 2 wks. and he has slept w/ us everynight. Toby still looks at him w/ evil and tolorates him but they do'nt really interact. They both fight for human attention, I hope they will play together eventually, but i don't know. She gives in because he's just too much for her to deal with, he's so hyper and she's older now and basically has the attitude that it just is'nt worth the hassle. I remember when she was like him. They've only had a couple of fights over food, and she won, but other than than that, he's the boss. I can sure see a change in her, I think the age difference is a little much, plus Toby has been the only dog w/us for about 3 yrs. now (rainbow bridge) pros and cons...