tokay gackos are a pretty agressive little creature. i have one in my viv that bit me, and would not let go. so i dunked him under water figuring that when he needed to breathe, hed let go. well after 3 mins in the drink, he didnt let go so i took him out and had to wait it out till he let go. just goes to show ya how stubborn they are and how long they will hold until they feel safe to let go