They are amazing creatures. Here are some fun facts:
There are five genera of hedgehogs:
Erinaceus
Paraechinus
Mesechinus
Atelerix
Hemiechinus
and a total of 17 species found across Europe, the Middle East, Africa and Central Asia but they are absent from North and South America, Australia and South East Asia.
The most common pet hedgehog in the UK is the African Pygmy Hedgehog which is what mine are.
This blew my mind when I discovered it.
The lesser hedgehog tenrec is an example of convergent evolution, a process by which animals that are not related, independently evolve to have similar traits to one another from having to adapt to similar environments
Lesser hedgehog tenrecs come from Madagascar and as there were never any hedgehogs there so there was space for an animal that ate the same diet of insects and other invertebrates that the hedgehog does. It protects itself from predators the same way too by rolling up into a ball with it's quills sticking outward but unlike hedgehogs, lesser hedgehog tenrecs are semi-arboreal, meaning that they like to climb, and in captivity they need branches to keep properly active. Their claws are hooked to help grip and hold on, rather than straight like the hedgehogs and...they are actually more closely related to elephants than other hedgehogs!