Terriers
are usually very high energy dogs. My former neighbors the Colemans had a Fox terrier named Spanky. He was so wound up when he was young that I always called him Wild Dog. When excited, he could jump up and down three feet off the floor. The vet gave them sedatives to calm him some. He was a very smart dog, and they said he could tell time. In the evening he would go look at the clock, and if it didn't show 10:30 pm (his bedtime) he would stay up, and then check it again. When the time rolled around, he would go lay down. When one of them would play the piano, he would howl along if he liked the song, but if it was something he didn't care for, he'd go in another room. Don't know if they still have him or not, as he would be almost 16 by now. Some other friends have a Rat terrier named Maggie, who doesn't jump around so much, but she sure likes to bark. She can see the mail carrier coming clear up the street, which starts her barking, and she will continue until he's out of sight, unless they take her to the basement. I think she could use a sedative, too. Anyway, have fun with JoJo, and hope he won't wear you out.