Is my dog underweight?

Hi there, My dog Vinnie is 5 months old and seems relatively happy spending his days bouncing around and climbing up on the furniture etc. He does seem a little lightweight for a Staffy though and I'm worried he might not be getting enough food. He looks a bit like a Boxer with long legs and a slender rear end. When we bought him we saw both parents and they were both big well muscled dogs. I know he is only 5 months old and I'm probably worrying unneccessarily but not sure of exactly how he should be looking at this age. I feed him twice a day and he gets the usual treats for going out to toilet etc. He seems pretty contented all round and doesn't appear overly hungry between feeds. I'd post a pic of him but it's hard to get him to stay in one place long enough to take one.

Hi, I've moved this so it gets more views

At tha age they are always very thin/leggy because they don't start filling out until after 1 year. Logan is 15 months and only filling out now.

Do you have a picture of him that we could see?

At that age they are very leggy/gangly, they don't tend to look like typical Staffs yet because they don't fill out until around a year old, so don't worry about it. If you can't overly-see his ribs or his spine, he's not underweight

Oh, and why not introduce yourself and your dog to us here? :

https://staffy-bull-terrier.niceboard.com/f7-new-member-introductions

I used to think the same with Zeus, at times he looked underweight, at times he looked really leggy, his physique used to change alot.

Its only now that hes 13/14 months old that hes starting to fill out and look more and more like a staffy.

5 months is very young, you're in for a lot of shape changes yet! Just enjoy it while you can.

Don't worry he's only a baby my Harvey is 2 now and still filling out nicely