Try having some real fun, like I did. Introduce a 10 year old cat, the household’s Senior Fur Person, to an insecure nine week old Great Dane puppy who outweighs her my more than two to one.
I bet you did have fun.
I've got a picture of my male cat sitting in the doorway of the kennel in front of the poor dog, who was peeking out of the kennel looking threatened.
/johnny