Generally when I go to the zoo, the lions are snoozing on rocks hidden away in the corner. Only on two occasions have I walked by and seen the male lion active. This is from one of those times.
The American Kestrel is a raptor that often perches on power lines along the road. Generally they give you only a second or so to grab a quick shot before they fly off after you pull over on the side of the road near one. That is, they give you a second or so if you're lucky. However, this particular Kestrel had caught a mouse and wasn't so quick to take off.
One of my earliest wildlife photographs, this chipmunk has his cheeks stuffed full of nuts and seeds. He hopped out onto a rock in my mom's flower garden to have a look at me before scampering off to hide his haul.