I have a mix breed dunker. She is very tolerant to kids and cats. High energy for sure, this 40lb dog can drag me behind her leash if I am not going fast enough! Where does the strength come from. She puts her nose to the ground every morning when I let her outside and squirrels and rodents dont stand a chance in the yard. Quite the Barker ,but is very amiable to other dogs and anyone not in her backyard. Very protective over me, especially when I am sleeping. Wonderful breed!