Did you know that the guinea pig jumps straight up and down when it's happy? There is even a term for it, it's called “pop-corning” which is quite fitting being that they eat constantly. The longest jump recorded, aka the happiest guinea pig, was in 2012 of 48cm and the name was Truffles (of course).

Guinea pigs cannot go more than 8 hours without food, so much so, that they make various sounds to let you know. These sounds include chirping, squealing, purring, and rumbling. I can only imagine what their 'hangry' sounds like. Eek! But this could be due to fact that their teeth do not stop growing and they have to eat a lot to wear them down.

The guinea pig has a stout body which can handle the constant eating, especially since they are active 20 hours of the day. They also don't need much sleep and tend to only take naps. And you may notice their eyes the most. Even though they seem big, they have terrible vision...but they can see in color. Bonus. And the location of their eyes allows them to see almost all the way around their head and body. Double bonus.

The guinea pig has a keen sense of hearing which compensates for the lack of vision to escape predators. They are also super-fast. The world's fastest guinea pig ran 10m in 8.81 seconds in 2009. His name was Flash (of course).