Buahaha! That sounds like Charlie. His nickname was Destructotron-5000. He ate so many garden hoses, randomly took bites out of the corners in our house, ran in his poo and jumped on us, ate our cell phones, and split my stupid lip so many times by headbutting me in the face with his leaps of joy...yeah. I loved that dog. lol. He did start to settle down by 2 years old though. I had to teach him how to have an off switch so that's not new.
Strider hasn't tried living with other males since he's been neutered so he may be more mellow about it now. I'll have to figure that out. It sounds like a male may be best for family protection, but if a gyp will do the job then that's an option too.
Thanks for the breeder links pops! I may have to take a field trip to Texas when we're able to buy a place because all the sheep and cattle breeders I like happen to be Texas as well.