weight problem

[mrsmagoo]

she has dry complete food once a day about 4 cup fulls , she weighs about 9 and a half stone to 10 stone about 140lbs in weight im only 8 stone so i cannot pick her up any longer to weigh her , Her sister limped a while back after getting up and the vet said it was a weight problem but sinse losing the weight shes now fine but star seems to be staying her weight ,you can clearly see shes to big by her back theres no curve at all
I wish i could let her off over the field but she gets to excited and runs off and people get very scared because of her size which i can understand so leash and muzzle need to be on her ,
The vet did'nt even tell me what food was best to feed her on just said watch her weight which is a disappointment , I've been told shes tall for a female bullmastiff to she's the size of a large male .
I walked into the kitchen earlier to find her taking food off the kitchen tops and quite happily munching away ,She seems hungry sinse her food was cut down and is always looking for food .

I'm shocked your vet just told you 'to watch her weight on her limbs' and didn't recommend/prescribe a food specifically for weight loss?? Ask the veterinarian to do so! What does Star's daily diet consist of? What brand of food? Wet or Dry food? How much each day? How often do you feed her? According to the AKC, Bullmastiff's should weight from 100-130 lbs. How much does Star weigh?

You said she limps when she gets up? She could very well have arthritis in her hips/back legs.... If she was older (7-8) I would just think she was stiff from laying down for awhile when she got up. But she's only 2, so arthritis could be a possibility.