Pit bull....

hellers are a favorite cattle dog in this "cattle area". many ride up in the pickup cab. its a known fact ya don't want to get in that guys truck.( without the owner). that suck will have you for lunch!
and realize dogs are like people, they might be full brother or sister but their personalities can be completely opposite. one dog timid the other aggressive. and a dog by nature is possessive and protective of hat he considers his territory or possessions.
people have to remember a dog is an animal and can be at times unpredictable.
same way with a horse. he might have a million miles on him and you would trust him with your life, BUT he is 1200 pounds, and ya never know when something can happen. I regard them as such in mind.