What is a good mnemonic to remember the 5 classes of vertibrate?

A good mnemonic to remember the five classes of vertebrates—fish, amphibians, reptiles, birds, and mammals—is "Funky Alligators Run By Mice." Each initial corresponds to a class: Fish (F), Amphibians (A), Reptiles (R), Birds (B), and Mammals (M). This playful phrase can help you recall the classes in a fun and engaging way.