Leviticus 11:29-38

‘These also are unclean to you among the swarming things that crawl around on the ground [and multiply profusely]: the mole, the mouse, and any kind of great lizard, the gecko, the crocodile, the lizard, the sand reptile, and the chameleon. These [creatures] are unclean to you among all that swarm; whoever touches them when they are dead becomes unclean until evening. Also anything on which one of them falls after dying becomes unclean, whether it is an article of wood or clothing, or a skin, or a sack—any article that is used—it must be put in water, and will be unclean until the evening; then it becomes clean. As for any earthenware container into which any of these [crawling things] falls, whatever is in it becomes unclean, and you shall break the container. Any of the food which may be eaten, but on which [unclean] water falls, shall become unclean, and any liquid that may be drunk in every container shall become unclean. Everything that part of their carcass falls on becomes unclean; an oven, or a small stove shall be smashed; they are unclean, and shall be unclean to you. Nevertheless a spring or a cistern (reservoir) collecting water shall be clean; but whoever touches one of these carcasses shall be unclean. If a part of their carcass falls on any seed for sowing which is to be sown, it is clean; but if water is put on the seed and a part of their carcass falls on it, it is unclean to you.