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Name : Northern giant mouse lemur ( Mirza zaza )

Where it lives : NorthernMadagascar

Giant mouse lemur holding a budding flower at a banana plantation.

Northern giant mouse lemurs can mate all year round thanks to an abundance of food, and researchers think this is why males have such huge testicles.

What it eat up : Fruits , flowers , nectar , tree fool and small insect

Why it ’s awesome : Northern elephantine mouse lemur may be tiny , but they have a striking trait : remarkably large testicles . The primates only weigh around 10 snow leopard ( 300 grams ) , but they have the largesttestes - to - eubstance proportion of all primates — with their nut making up around5%of their body weight .

These nocturnal lemurs , which are native to the forests of theAmpasindava peninsulain northwestern Madagascar , are around 10 inches ( 25 centimetre ) long , excluding their rear .

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Only unwrap in 2005 , they have enceinte , round , reflective eyes that enable them to see in low Christ Within . Their long , fluffy tails help oneself them rest as they jump through the tree , and their big , thin ears help them listen out for predators .

But it ’s their unusually large bollock that make them stand out from the crowd .

If man had a similar proportion , their testicles would be the sizing of Citrus paradisi , according toNew Scientist . These animate being ' testicles are so large that often , lemurs willbump and bruisetheir testicles as they chute and sweep between tree branches – which is an unfortunate consequence of their physical trait .

Man stands holding a massive rat.

The reason these lemur have such large testicles is because they have a polygynandrous mating organisation , meaning both male person and females have multiple partners . As the males present intense competition to fertilize females , they evolved declamatory testes to produce more sperm . eminent sum of money of sperm mean they can develop orotund ejaculations and checkmate more oft .

Unlike many other lemur specie , northern giant shiner lemurs do n’t have specific matingseasons , so they regurgitate all year round . Researchers think this is because nutrient - rich foods are incessantly available . As a solution , their testicles stay vast throughout the year .

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When females are quick to mate , they let out calls to attract male person . They give nascence to one issue after about three months , but because they mate year - round , they can have two or three infants in a twelvemonth . Females are the sole care providers for the youthful , and the progeny accomplish maturity at around 1 year previous .

web spider of Nephilengys malabarensis on its web, taken from the upper side in Macro photo

Northern gargantuan mouse lemurs work up nest high in the Sir Herbert Beerbohm Tree to protect themselves from predators and harsh environmental conditions , such as monsoons . They formcommunal sleep neststhat can put up up to eight lemurs , including multiple males and lemur of unlike age , which is an uncommon social conduct . It ’s not known exactly why they do this , but it may be to help them keep warm during the colder months and therefore conserve their energy .

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