The thing is thay are crosses, i got a 3 year old rottie x lab, and a 16 month old german shep x staffy.

The first one is about the size of a rottie but needs to put the rottie fat layer on,

The other one is chuncky like a staffie, but taller about boxer size looking to pump up her staffie mussle tone

I whent to the local pet shop and i got 30, 1lb bags of tripe for 10 pounds, How much do i give them, per day

Mine get 1lb of tripe each for their morning meal, both Labradors, and I mix it with blended vegetables.

I personally wouldn't feed tripe by itself, it doesn't have a wide enough nutritional range to give them the best diet to obtain all the nutrients they require, although it's great as part of a diet, in my opinion.  Mine get a mix of tripe, chicken, lamb bones, beef/lamb heart, liver/kidney, tinned fish, raw eggs, freshly blended vegetables, and a few other bits and pieces, as well as any left overs.  If you pm me your email address I can send you over the diet sheet I use as a guide.

The only way to get muscle tone is to give them suitable exercise - there is a huge difference between muscle and fat :-)

I feed my G.S.P tripe with his kibble food, I buy it in blocks and give him half a block each feed, I would not feed  it on it's own as there is not enough protein in it, my boy is a year old next week so he needs his protein, and pointers are nutorious or not gaining weight!!!!!!!!!