Do snakes get thirsty?

Yes, all reptiles need water. Some drink more frequently than others. They get allot of their moisture from their prey. Some are better at conserving water than others. Most snakes don't release water to urinate, they release a solid that contains the uric acids called "urates". Tropical reptiles that need a more humid environment can become dehydrated quite easily. You should always have a clean, fresh, water dish available for almost all species.