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Rebecca O'Connell (iStock)

Reindeer Sometimes Eat Meat

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Rebecca O'Connell (iStock)

Does your family leave carrots out for Rudolph and company on Christmas Eve? This year, try a live lemming instead. Despite being largely herbivorous, stunned observers have watched the hoofed mammals hunt down unwary lemmings for centuries. According to a 1905 article in the Spectator, the reindeer eat the rodents when they're migrating, "killing them by stamping on them with their feet":

The probability is that reindeer eat the lemmings for the same reason that many Northern herbivorous creatures will eat flesh, as a kind of change and stimulant in diet, and that they look on the grass-fed lemming much as we might look on stuffed olives.

Eggs, too, are liable to end up in a reindeer’s stomach: The animals have been spotted raiding the nests of Arctic waterfowl, accidentally trampling whatever contents they don’t eat. In this respect, the apple doesn’t fall far from the tree—white-tailed deer will sometimes snarf down sparrow eggs (and even chicks) for a quick dose of calcium. Don’t believe us? Feast your eyes on this:

A few ornithologists once suspected that, for these reasons, the climbing reindeer population in Siberia’s Lena Delta region was actively depleting the local swan supply, though such fears now appear ill-founded. Still, Santa’s elves may need to watch their backs…

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Big Questions
Why Do Cats Freak Out After Pooping?
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Cats often exhibit some very peculiar behavior, from getting into deadly combat situations with their own tail to pouncing on unsuspecting humans. Among their most curious habits: running from their litter box like a greyhound after moving their bowels. Are they running from their own fecal matter? Has waste elimination prompted a sense of euphoria?

Experts—if anyone is said to qualify as an expert in post-poop moods—aren’t exactly sure, but they’ve presented a number of entertaining theories. From a biological standpoint, some animal behaviorists suspect that a cat bolting after a deposit might stem from fears that a predator could track them based on the smell of their waste. But researchers are quick to note that they haven’t observed cats run from their BMs in the wild.

Biology also has a little bit to do with another theory, which postulates that cats used to getting their rear ends licked by their mother after defecating as kittens are showing off their independence by sprinting away, their butts having taken on self-cleaning properties in adulthood.

Not convinced? You might find another idea more plausible: Both humans and cats have a vagus nerve running from their brain stem. In both species, the nerve can be stimulated by defecation, leading to a pleasurable sensation and what some have labeled “poo-phoria,” or post-poop elation. In running, the cat may simply be working off excess energy brought on by stimulation of the nerve.

Less interesting is the notion that notoriously hygienic cats may simply want to shake off excess litter or fecal matter by running a 100-meter dash, or that a digestive problem has led to some discomfort they’re attempting to flee from. The fact is, so little research has been done in the field of pooping cat mania that there’s no universally accepted answer. Like so much of what makes cats tick, a definitive motivation will have to remain a mystery.

Have you got a Big Question you'd like us to answer? If so, let us know by emailing us at bigquestions@mentalfloss.com.

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Animals
Listen to the Impossibly Adorable Sounds of a Baby Sloth
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RODRIGO ARANGUA/AFP/GettyImages

Sometimes baby sloths seem almost too adorable to be real. But the little muppet-faced treasures don't just look cute—turns out they sound cute, too. We know what you're thinking: How could you have gone your whole life without knowing what these precious creatures sound like? Well, fear not: Just in time for International Sloth Day (today), we have some footage of how the tiny mammals express themselves—and it's a lot of squeaking. (Or maybe that's you squealing?)

The sloths featured in the heart-obliterating video below come from the Sloth Sanctuary of Costa Rica. The institution rescues orphaned sloths, rehabilitates them, and gets them ready to be released back into the wild.

[h/t The Kid Should See This]

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