![Los Angeles Zoo & Botanical Gardens on Twitter: "Spit: kangaroos' forearms have lots of blood vessels near the skin. When the weather's hot, they lick their arms so their evaporating saliva can Los Angeles Zoo & Botanical Gardens on Twitter: "Spit: kangaroos' forearms have lots of blood vessels near the skin. When the weather's hot, they lick their arms so their evaporating saliva can](https://pbs.twimg.com/media/DjDA9iqUwAEFUOJ.jpg)
Los Angeles Zoo & Botanical Gardens on Twitter: "Spit: kangaroos' forearms have lots of blood vessels near the skin. When the weather's hot, they lick their arms so their evaporating saliva can
![A kangaroo pouch may look like a simple pocket, but it's actually a complex nursery that contains everything a growing joey needs. The pouch is hairless on the inside, and is lined A kangaroo pouch may look like a simple pocket, but it's actually a complex nursery that contains everything a growing joey needs. The pouch is hairless on the inside, and is lined](https://external-preview.redd.it/M46G-WTVgE5DiSezgiPHMb_bsG3bZnFITnFXm5iEeB0.png?width=640&crop=smart&format=pjpg&auto=webp&s=e12e2be7e7b64a0dc05ace9749744c4938fbd2ab)
A kangaroo pouch may look like a simple pocket, but it's actually a complex nursery that contains everything a growing joey needs. The pouch is hairless on the inside, and is lined
![Kangaroos can't sweat, so when they're too hot they lick their forearms - which contain a network of blood vessels close to the surface of the skin - to cool off. : Kangaroos can't sweat, so when they're too hot they lick their forearms - which contain a network of blood vessels close to the surface of the skin - to cool off. :](https://external-preview.redd.it/cKi9Tje9R_X4aGTNHficV5-wSCRcM-HrDoSxzv43y9I.jpg?width=640&crop=smart&auto=webp&s=225538fc50b617942b6c12d489a934e7a841fe77)