• Dogs can "see" heat with their noses – This helps them track warm-blooded prey.

• Dogs have a dominant paw, just like humans are left- or right-handed – You can find out which by watching which paw they use first.

• Dogs can recognize human voices over the phone – Some even respond to video calls.

• Dogs can locate buried items using the Earth’s magnetic field – Like a built-in compass.

• Dogs can sense hormonal changes in humans – They often react when their owners are stressed.