My snakes have all figured out that the glass of the tank protects them too. They will come right up to me through the glass...but the minute I open the tank, they get skiddish or start false striking at me. Sometimes now, Cee Cee and Seeley will sit and let me pet them and not flip out...progress. Hermes will put his little nose up to my hand as long as I am very slow about approaching him...any quick movement and he slithers away quickly.