Animals Arthropods Health & Nutrition July 15, 2016 10:00 AM How tarantulas molt First of all, if you find your pet tarantula lying on their back it is very important that you do not touch them as they are extremely fragile at this time. It can be quite alarming to find your tarantula lying in this seemingly unnatural position but chances are it is simply because they are beginning to molt. Most tarantulas will molt while laying on their backs (though some will molt on their sides). Molting usually takes a few hours so keep an eye on your tarantula (remember to not touch the... more