You know that weird, howling laughter sound you always hear in jungle movies? It's not a monkey or a hyena. It's this little guy: the kookaburra.

Native to Australia and New Guinea, kookaburras are about the size of an owl, but their call sounds like a grown man laughing hysterically at YouTube videos.

This is Crikey from the San Diego Zoo, and his laugh isn't just infectious, it's straight-up viral. Go ahead and try to keep a straight face while this guy chuckles. Let's put money on it. It's easy cash for us because we guarantee you can't keep from giggling when Crikey gets going. (Source)

The Laughing Kookaburra (Dacelo novaeguineae) is a carnivorous bird in the kingfisher family Halcyonidae. Native to eastern Australia, it has also been introduced to parts of New Zealand, Tasmania and Western Australia. Male and female adults are similar in plumage, which is predominantly brown and white. A common and familiar bird, this species of kookaburra is well known for its laughing call.

The name "Laughing Kookaburra" refers to the bird's "laugh", which it uses to establish territory amongst family groups. It can be heard at any time of day, but most frequently shortly after dawn and after sunset to dusk.(Wikipedia)