The kids added a rescued beagle/German short hair pointer, Sonny, from the pound while we were gone. He's a mellow pup at 9 months. Karma is still her excited energy-bunny puppy at 4 1/2 years. So, she was a bit over the top for Sonny.
We had 2 tennis balls so that they could both chase/catch. Sonny doesn't have the coordination down yet but he's getting the idea. But, he would rather chew and tear apart the ball instead of retrieve it. He has concluded that we will just throw it again.
The yard area is not completely secured with tall fencing. Karma remembers the yard boundaries and stays within the area as long as she has her ball. Sonny on the other hand can leap over the front garden fence but doesn't go far. We had left the dogs outside during dinner so they wouldn't fight over positioning themselves under the 1 yo's high chair, when Karma started to bark and bark and look at the back gat fencing. Since that's usually where the cat hides himself we thought, "Oh, Marley's back." But after further looking we could see that Sonny was outside the gate waiting for someone to let him back in.
Having a sort of playmate has seemed to calm Karma down a little bit. She needs to always keep track of his antics so she can be sure to have the best smelling ball for playing. Karma has even tried to get Sonny to throw the ball for her. She drops it at his feet and poises for the throw. He plops on it and starts to chew.