Dolly, out tiny bit yorkie, 2.8lbs at 3yrs-old, can hold it for 12 hrs with no problem, day or night. at first I was quite concerned, but then, she proved it to me thats just the way she is.
on the other hand, our chi, 5lbs about 4yrs old, can only hold it for 6 hrs during the day, and 10 hrs, more or less, during nights.
I don't think weight's got lots to do with how long they can hold, but I think at least, they should be able to hold on for 8-10hrs min at night, a lot of times, its all on their minds, set up an solid schedule for last and first potty trip, then try to convince her that this is the routine unless she really really needa go (probably somethings wrong).
__________________ Mommy  my princesses Shorty  & Dolly  |