My Jack russell Pip, has started to get fatter but he has been going for his usual amount of walks and eats the standard amount of Dod food.
Is there something wrong with him?
Please help!
Shirley

You don't say how old he is but it could just be that he has matured so is a bit less frenetic on his walks.  Cut down his food if all else seems well.  My dogs up to maturity probably eat 25% more than they need when mature.

As Brainless says, mature adult dogs need substantially less food than youngsters. You're right to be concerned about weight gain, so the first thing to do is cut his food input - either no treats or les at his meals, and see how it goes after a few weeks.
:)

any chance you've got very friendly neighbours that Pip has taken to visiting??