The tuco-tuco is a rodent that lives in South America. There are an estimated 60 known species, to date. They can be found in Argentina, Bolivia, Brazil, Chile, Paraguay, Peru, and Uruguay. Tuco-tucos prefer grasslands, forests, pastures, mountain slopes, and agricultural fields (much to a farmer’s dismay). Tucos can be found at altitudes of up to 13,000 feet. Due to habitat loss, human interactions, and trapping some species of these critters are listed as Endangered by the IUCN. First the Stats… Scientific name: Ctenomys Weight: Up to 21 ounces Length: Up to 11 inches, plus up to a 4.3 inch tail Lifespan: Up to 3+ years Now on to the Facts! 1.) They have long fore feet designed for burrowing, and bristled hind feet that are perfect for grooming. 2.) Like all rodents, their teeth never stop growing, so they need to constantly wear them down to prevent an overlap of their teeth that would prevent them from being able to eat. 3.) Their scientific name Ctenomys means “comb-mouse” and is in relation to the stiff comb-like hairs on the back of their feet. 4.) A fossorial (spend most of their lives underground) species, these rodents can spend up to 90% of their lives underground. 5.) Tuco-tucos have evolved 2 types of digging methods: scratch-digging, where they utilize their front limb claws for excavating, and skull-tooth digging, wherein they use their skull and incisor teeth for creating burrows. But wait, there’s more on the tuco-tuco! 6.) Like a beaver, their incisors are orange in color. 7.) These critters are diurnal (active during the day). Did you know…? They get their name from the “tuc-tuc” sound they make while burrowing. 8.) A tuco-tuco can be either solitary or social, based on where it hails from. Solitary species typically live in arid habitats, while semi-social or social ones inhabit wet or moist habitats. 9.) Males become aggressive during courtship. 10.) Females undergo up to a 120 day gestation (pregnancy) that yields up to 7 young. But wait, there’s still more on the tuco-tuco! 11.) Tucos eat various roots and grasses. 12.) Cats, dogs, foxes, and birds of prey all look to make a meal out of tuco-tucos. Now a Short Tuco-Tuco Video! Be sure to share & comment below! Also, check out the Critter Science YouTube channel. Videos added frequently! Want to suggest a critter for me to write about? Let me know here. Learn more about all kinds of cool critters, right here! toolTips('.classtoolTips14','<img src="https://critter.science/wp-content/uploads/2022/03/elephant-300x149.jpg" alt="elephant" width="300" height="149" class="alignnone size-medium wp-image-14086" /><br/><br/>Gestation is the process of carrying or being carried in the womb between conception and birth. In other words, pregnancy.'); toolTips('.classtoolTips20','<img src="https://critter.science/wp-content/uploads/2022/02/pd1b-300x147.jpg" alt="prairie dog" width="300" height="147" class="alignnone size-medium wp-image-13970" /><br/><br/>Fossorial hails from the Latin fossor, which translates to \'digger\'. These animals are adapted to digging and which live primarily, but not solely, underground.'); toolTips('.classtoolTips20','<img src="https://critter.science/wp-content/uploads/2022/02/pd1b-300x147.jpg" alt="prairie dog" width="300" height="147" class="alignnone size-medium wp-image-13970" /><br/><br/>Fossorial hails from the Latin fossor, which translates to \'digger\'. These animals are adapted to digging and which live primarily, but not solely, underground.'); toolTips('.classtoolTips31','<img src="https://critter.science/wp-content/uploads/2020/01/dc1a-1-300x164.jpg" alt="domestic cow" width="300" height="164" class="aligncenter size-medium wp-image-12260" /><br/><br/>An animal that falls into this category is active during the day. Animals that fit this description typically use sight for hunting prey. Others, like <a href="https://critter.science/the-butt-breathing-fitzroy-river-turtle/"><strong>turtles</strong></a>, are active during the day as they need the sun\'s rays to aid in the production of vitamin D, which is needed to help process calcium and prevent metabolic bone disease. <a href="https://critter.science/the-hummingbird/"><strong>Hummingbirds</strong></a> rely on the sun as most of the nectar they gather comes from flowers that are open during the day. <a href="https://critter.science/the-beloved-domestic-cow/"><strong>Cows</strong></a>, <a href="https://critter.science/the-playful-and-loyal-domestic-dog/"><strong>dogs</strong></a>, <a href="https://critter.science/the-borneo-pygmy-elephant/"><strong>elephants</strong></a>, <a href="https://critter.science/the-beautiful-blue-morpho-butterfly/"><strong>butterflies</strong></a>, and <a href="https://critter.science/the-black-giant-squirrel/"><strong>squirrels</strong></a>, for example, are diurnal.');