Jake had stayed at the back door as Kat took Spot outside again, leaning on the door frame and drinking water as he watched the different animals. When he heard the growl, though, he paid a lot more attention to Spot and the two like him. He projected a sense of calmness towards the growling dog, and reached for it through the Force. He'd been able to do this back in his time, stopping various creatures (and his other self, a time or seven) from the forest attacking him by calming them down and almost taming them. Sure enough, the growling died down almost instantly. These were good dogs, or they would be.
"I like your zoo," he commented, and finished the glass of water.