Cats and dogs can hear ultrasound.
350
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
Cats recognise the voice of their owner, but never evolved to care.
22
A scorpion can hold its breath for up to 6 days.
19
Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
23
One in three dog owners say they have talked to their pets on the phone.
427