This is my four year old crossbreed (jack Russell and chuahuahua).
The titles says it all really. I know he'd been pinching my mum's dogs food when he stayed there (a healthy weight Dalmatian) and had noticed last year that he had started to get porky but figured he'd lose it with a bit of extra exercise.
Well, he hasn't. He came back from the kennels yesterday (holiday) and I actually looked at him properly 
He weighs 8.1kg.
What should I do? He has a half hour walk every day which I thought would be enough. He has two cups of dried food and I admitted to myself in the past that I've been far too free in giving him treats ( dog treats, meat from our dinners etc.) but I stopped that last year when I thought he was putting on weight.
Any advice?