Looks fine to me too! Just don't want to see ribs! A waist is good! People think ALL bulldogs should be rotund and they are all different. And they keep filling out for almost 2 years!
He is absolutely perfect..... there is a misconception of those who do jot know the breed... they THINK bulldogs are suppose to be fat and that is so not true. Your Boo looks great
Boo does not look to skinny at all! He actually is built just like my bully Winston. People question me on how skinny he is all the time but I just think he is really healthy. I either walk him or take him to the dog park everyday so he keeps his trim build. If you start to see ribs or something then yes maybe that is a problem but he looks perfect to me! By the way how much does he weigh? Winston is 48LBS and I think that is pefect.
I have a 5 month old and a 7 month old. Boo looks just like my 5 month old in size and shape. They fill out between 5 and 6 months old I think, from my experience. Liz got wider and a jaw when she was between 5 and 6 months.