A cat has also a feeling what their owners is feel is reflect to them but luckily I am not sad I just over come the sadness you'll see a few gates from my house is a friend whom I did not expect to see in the box. so life is not forever. So say something good to your friend instead of criticizing them. Encourage them, uplifting them. you'll never know what happen next. Say good things. At least when they go you have peace of mind knowing that you do everything to make them happy and not a burden to them. So yes just like the cat whatever the owner is like reflected to them. if your happy then they're also happy.