So I have been offered a Great Dane pup of my choice out of a litter. I don't know if I should take them up on the offer or not. I have two boxers, a rescued jack russell, one indoor rescued cat, and many outdoor "barn cats". Tell me about their energy level, their smarts, are they usually likely to chase (chickens, cats, small dog) critters? I have read online a bit about them, but you know how websites are... all repeating themselves about "energetic and protective" ok.... so are they hyper? or just playful? (again, I have boxers... I like energy, but not spaz like a dalmation for example) Protective like growls at the mailman or protective as in snaps at visitors? Experiences?