A Spiky Surprise
There is one little animal in Europe that is loved by all, immortalised in children’s books, welcomed by gardeners and flagship of the realisation that our mammal populations may be declining due to our very own actions. Over in the States although not native these same creatures are kept as pets (that’s another story and not such a good one). Although it’s hardly a creature to cuddle or pet they are thought of as very cute, something to do with that snuffling around your garden in dry leaves and, getting all snoozy, having to sleep away the winter in a cosy corner. Yes, I write of the hedgehog.
Now, why, I hear you ask is she writing about a European mammal on a blog about the Serengeti? Well it may come as a surprise to some to find out that there are in fact 18 species of spiny hedgehog found across Europe, Asia and Africa. Six species are present in Africa. The North African hedgehog (Atelerix algirus) extends its range across the Mediterranean belt of North Africa and Iberian Peninsula as well as the Balearic and Canary islands. The long-eared hedgehog (Hemiechinus auritus) touches into Libya and Egypt and the desert hedgehog (Paraechinus aethiopicus) a true Saharan specialist. The last two species are also found through Arabia and Asia. The remaining three species are solely found in Africa; the southern African hedgehog (Atelerix frontalis), Somali hedgehog (Atelerix sclateri) and the four-toed hedgehog (Atelerix albiventris).
The four-toed hedgehog is found across West, Central and East Africa as far as the Zambezi River and so is the species that is found in the Serengeti. As far as I know we have never had a capture event from our camera traps of this enigmatic little creature but please let me know if someone has come across one.
In European culture where woodlands are seen as wildlife havens most people would associate the hedgehog with forests or at the very least the edges of forests and hedgerows where indeed this species is well at home but its African cousins are rather different in their habitat preferences. The four-toed prefers the drier regions and is partial to grasslands and according to The Handbook of the Mammals of the World vol 8 it especially likes overgrazed regions with dense ungulate populations. All that trampled grass and dung supports plenty of insects for it to munch. Well that sounds just like the Serengeti to me!
Although insects make up a large part of the diet they are omnivorous and will eat fungi and fruits as well as other plant matter. A little known fact, they will also kill small vertebrates like frogs, lizards and mice and are known to take on even venomous snakes. Their spines are great protection from the bite of an angry snake.
As formidable as those spines are it is the ability to curl up into a ball that is their true defence. Now they don’t just tuck their heads in and hope for the best, the skin that the spines are attached to is very flexible and is edged by a strong band like muscle that is attached to the forehead. When it is contracted it acts like a drawstring on a bag that holds in the body, head and limbs with the spines closing up the seal. It works remarkably well but inevitably certain animals have learned how to unzip the bag, honey badgers and eagle-owls are amongst those experts in the Serengeti.
As a family hedgehogs are known to perform a bizarre act known as self-anointing. The hedgehog will chew and lick a substance until it has a mouth full of saliva and then with acrobatic contortions it will plaster this saliva all over its body, apparently they do this in a frenzied manor and it is quite hard to distract them once in the process. What is unclear is why they do it. There is no obvious reason. Studies have shown every age group performing self-anointing including nestlings whose eyes have not even opened. They only thing that stands out is that strong smells and tastes seem to trigger the behaviour such as dog or fox urine and a whole host of human made items such as leather, polish or nylon stockings. I am not even going to ask what the scientific research question was when they discovered those three!
So from Mrs Tiggy-Winkle (Beatrix Potter) to sonic the hedgehog we may all be very familiar with this loveable creature but perhaps we don’t know all there is to know. Keep your eyes out for the first Snapshot Serengeti camera-trapping.
Image: Author Jkasui, Wikimedia, https://creativecommons.org/licenses/by-sa/3.0/deed.en