Good With Dogs:⬛⬛⬛⬛⬜⬜⬜
The Australian Cattle Dog's tail should not be docked. No dogs tail should be docked unless it is a medical reason or the dog is going to be a competition conformation show dog. However, the Australian Cattle Dog breed is not supposed to have a docked tail. All puppies need to have their dogs, starting at 7 weeks old and continuing on with 3 sets every 3 - 4 weeks after 7 weeks old. If you cannot afford for your puppies to have their shots, please don't have puppies in the first place. As for price, it is best to sell them for the price of what a physical exam, first set of shots and dewormed would cost. When the puppy is purchased, go to the vet and pay for that all to be done and then give them their new puppy. That way you know that the new owners can afford the puppy, but also that the puppy is safe and has all he/she needs for a healthy, full life.
Needs to be "fixed" then in a couple months his attitude will slow down and he will relax and let him know u do not approve of his aggressiveness put a hand on him and speak forcefully saying " no " loudly
Please don't "put a hand on him". The random bursts of energy you are talking about are called "The Zoomies". Puppies and kittens, as well as human children get this burst of energy now and again. Even adults, both human and animal still get the zoomies now and again. It is a natural and normal thing. However, setting your pup up for success is the best way to curb the destructive behavior you dislike. Have a box of approved toys and give them to your pup when the zoomies hit. As for the biting, your pup is tapping into his instincts as a herding dog. Because he is young, he had no learned bite inhibition with humans yet and so the biting coupled with his herding instincts can be hard to handle. When he nips at you, yelp loudly and turn away from your pup. Count to 20 and then turn back to him and praise after he's stopped. This will teach him that biting.nipping a human will cause him to be ignored, which he does not want. He will soon go and grab toys instead and ask you to play instead of bite or nip you.
At 8 weeks old, the testicles should already be dropped and can be felt by a vet. However, they will start to grow and be noticeable around the 4 month range.
Yes, your niece is the proud owner of a Red Australian Cattle Dog. A.C.D's can come in red or blue coloration's with tan patches and sometimes even red and blue coloration's in the same coat. The white markings are normal and allowed in the breed as well.