Hi there! Welcome to the pack. I hope you enjoy your stay on our yard.
First off, I'll address your comment/post. If your dog is weighing in at 100 lbs or more, and has that big of a head, he/she is more than likely not an APBT
or "pit" as you say, but more likely an American Bully or something similar.
Second, we don't really worry about the size of our dogs' heads. We're not here for that. I don't mean to sound crass, but we're here to educate about training, socialization, handling, and the more important aspects of being a responsible bully breed owner. Head size, chest size, and other menial things don't matter to us.
I hope I haven't put you off on continuing your membership here. Stick around, and join in some other conversations if you'd like. We're a group comprised of pet owners, breeders and show/competition handlers who value the past of these beautiful breeds, and embrace how far they've come. We'd love to see some pictures of your dog, if you'd like to share with us. Simply navigate to the Pictures sub-forum, and feel free to post as many as the forum will allow (considering you're still new, it won't b that many at first).
I look forward to interacting with you further in the future. Have a great day and thank you for your understanding.