I'm not too worried about either. I've never had a problem with bears or lions. I did have a bear popping his/her jaws at me in the oakbrusk in the dark at 10 yards one time. I backed out and went around.
Blowing cow/calf sounds in cat country is probably the main reason I'd think about carrying a pistol. I've had a couple .454 Casulls in the past, but I sold them. Don't currently have a .44 or anything bigger than 9mm. Whether it's a real need or not, it's a good excuse to buy another pistol.
"Darlin', I need a bigger pistol so I don't get eaten by lions and bears."