Mine have two 45min walks a day (Twinkle is very energetic and is practically climbing the walls if she doesn't have at least that!)....at weekends we can be out for
hours. They'll both drink water from a sports bottle, which makes things easier. If it's a really hot day (not generally a problem in England
) we walk them early in the morning or in the evening instead.
Saying that, I'm fortunate that I work from home and so have that time to spare during the week (not easy to fit in two 45min walks a day when you've been out at work all day!) I think as long as your yorkie is getting exercised he/she will fit in with your routine with regards to length of time xxx xxx