And the largest known squirrel in the world title goes to… the black giant squirrel. These large critters take up residence in the subtropical and tropical coniferous and broadleaf forests of Bhutan, northern Bangladesh, eastern Nepal, northeast India, southern China, Laos, Myanmar, Thailand, Malaysia, Cambodia, Vietnam, and western Indonesia. Due to hunting and habitat loss, the black giant squirrel is listed as Near Threatened by the IUCN. First the Stats… Scientific name: Ratufa bicolor Weight: Up to 3.5 lbs. Length: Up to 13 inches, plus a 17 inch long tail Lifespan: Up to 18 years Now on to the Facts! 1.) These huge squirrels are diurnal (active during the day). 2.) Like pretty much all other squirrels, they are arboreal (spend most of their lives in trees). They will occasionally venture to the ground to feed on fallen seeds and fruit. 3.) They typically stay in their forest home and seldom ever venture into towns or farms. 4.) Giant squirrels are solitary and only congregate in small groups during the mating season. 5.) Due to the lack of need, they do not hibernate. But wait, there’s more on the black giant squirrel! 6.) Their diet consists of pine cones, seeds, fruits, and leaves 7.) Not much is known of their breeding habits. It is assumed that they breed anywhere from March – August. Did you know…? During the last 10 years, these squirrels have seen a drop in numbers of 30%. This is due to timber harvesting, human settlements, agriculture, and over-hunting for meat. 8.) Females give birth to 1 – 2 young in a drey (nest). 9.) Gestation (pregnancy) lasts about 35 days. 10.) Mom nurses her young for up to 5 weeks. Now a Short Black Giant Squirrel Video! 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('.classtoolTips5','<img src="https://critter.science/wp-content/uploads/2020/09/mbml1b-300x183.jpg" alt="Madame Berthe's mouse lemur" width="300" height="183" class="aligncenter size-medium wp-image-12737" /><br/><br/>This is a state of metabolic depression and inactivity in <span class='tooltipsall tooltipsincontent classtoolTips8'><span class='tooltipsall tooltipsincontent classtoolTips8'>endothermic</span></span> (warm blooded) creatures. It is displayed as a reduced heartbeat (by up to 95%), low metabolic rate, slow breathing, and low body temperature. Critters that hibernate typically prepare for it by building up an abundance of body fat during late summer and autumn that helps provide them with energy throughout the winter months. There are 2 types of <span class='tooltipsall tooltipsincontent classtoolTips5'>hibernation</span>: facultative & obligate hibernation. Facultatives hibernate when it’s too cold and food supply has been reduced. Obligates are able to sleep despite access to food and comfortable temperatures. A facultative hibernator would be the <a href="https://critter.science/the-amazing-prairie-dog/"><strong>black-tailed prairie dog</strong></a>. A few obligate hibernators are: <a href="https://critter.science/the-round-tailed-ground-squirrel/"><strong>ground squirrels</strong></a>, <a href="https://critter.science/the-madame-berthes-mouse-lemur/"><strong>mouse lemurs</strong></a>, and <a href="https://critter.science/the-beautiful-monarch-butterfly/"><strong>butterflies</strong></a>.'); 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('.classtoolTips28','<img src="https://critter.science/wp-content/uploads/2022/02/sloth1a-300x153.jpg" alt="sloth" width="300" height="153" class="alignnone size-medium wp-image-13966" /><br/><br/>Stemming from the Latin word arboreus, which means "pertaining to trees", arboreal creatures spend all or most of their lives in or around trees and tall shrubs. They seldom venture to the ground, if at all.'); toolTips('.classtoolTips28','<img src="https://critter.science/wp-content/uploads/2022/02/sloth1a-300x153.jpg" alt="sloth" width="300" height="153" class="alignnone size-medium wp-image-13966" /><br/><br/>Stemming from the Latin word arboreus, which means "pertaining to trees", arboreal creatures spend all or most of their lives in or around trees and tall shrubs. They seldom venture to the ground, if at all.'); 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.');