Reminds me of a joke. Frogs, not lizards, but...
A pair of scientists want to see what happens when they cut the legs off a frog. They start by yelling, "JUMP!!" at the frog, and it jumps 10 feet.
They cut off one leg and repeat the test. The frog jumps 5 feet.
They cut off a 2nd leg and repeat the test. The frog jumps 3 feet.
They cut off a 3rd leg and repeat the test. The frog jumps 1 foot.
They cut off the last leg and repeat the test. The frog does not move. "JUMP!!! JUMP!!!". Nothing.
The scientists confer and write in their journal, "Cut off all 4 of the frogs legs and it goes deaf."