Mammals:
* Camels: The iconic humps of camels are actually fat reserves, which provide energy for long journeys without access to food or water.
* Bison: Bison have a distinct hump on their shoulders, which is made up of muscle and bone. It provides strength and stability for the animal's powerful build.
* Rhinoceros: The rhinoceros has a large, bony horn on its nose and sometimes smaller bumps on its back, especially in the case of the Indian rhinoceros.
* Armadillos: These fascinating creatures have bony plates covering their entire body, including their backs, which create a series of overlapping bumps.
* Spiny Mice: Some species of mice have spines along their backs, which provide them with protection from predators.
* Hedgehogs: Hedgehogs have spiky quills all over their bodies, including their backs, for defense.
Reptiles:
* Tortoises: Most tortoises have a shell covering their backs, composed of bony plates (scutes) that form distinctive bumps and ridges.
* Iguanas: Certain species of iguanas have spines running down their backs, providing a defensive function.
* Crocodiles: Although not technically bumps, crocodiles have large, bony plates (scutes) on their backs, which are more prominent than other reptiles.
Fish:
* Pufferfish: Some pufferfish have a unique ability to inflate their bodies with water, creating a bumpy, rounded shape for defense.
* Anglerfish: Certain anglerfish have fleshy bumps or spines on their backs, which may serve as lures to attract prey.
* Sea Dragons: These amazing fish have long, leafy appendages that extend from their bodies, creating a bumpy, seaweed-like appearance for camouflage.
Amphibians:
* Toads: Many toads have bumpy, warty skin on their backs, which can help them camouflage or deter predators.
Insects:
* Beetles: Many beetles have distinctive bumps or ridges on their hard exoskeletons, which provide protection and camouflage.
* Grasshoppers: Grasshoppers have a pronounced pronotum (the top section of their thorax), which may be bumpy or ridged.
This is just a small sampling of the many animals with bumps on their backs. The bumps serve various functions, including protection, camouflage, and even attracting mates.