A lot of variance between lines and types. You could end up with the best dog you've ever owned, or the worst. It also depends on what type of Pit, modern or old school, ADBA, UKC, AKC, Am Bully. Some are truer to the common types of the breed, others are more guardy and not very "Pitty" acting. Any information on lines/type? Did you meet the parents? Typically, they are loaded with prey and highly excitable. Lots of energy and very people submissive and friendly. Great with kids. Can be dog/animal aggressive.