It's always prepared.
Goldfish: I forgot Goldfish 911: Forgot what Goldfish: WHO IS THIS Goldfish 911: I DON'T KNOW
First third and emergency.
A full one, in case he gets thirsty, and an empty one, in case he doesn’t.
CAT: *bolts for no apparent reason* ME: *bolts in the opposite direction in case she's after both of us*