There are two meanings of the word spine: 1. The backbone of a creature that extends from the bottom of their head/skull all the way down their back. And 2. a stiff, pointed, part that sticks out from a creature. E.g. the pointy spines of a fish or kina.

The way that some animals hide by blending into their surroundings.

An animal that is hunted and killed by other animals for food.

An animal (E.g. a shark, dolphin, or human) that naturally hunts and eats other animals.