Humans still biggest threat to hedgehogs
The hedgehog was a hefty one, certainly looking for somewhere to hibernate, with enough fat on it to do so. It was dimmity time so the fuzzpig may have been looking for supper. As it was crossing the road I picked it up and was holding it when two cars raced by, the music within going "thud-thud-thud". They would most probably have hit the animal so I was delighted to take it into our back garden and feed it with a saucer of cat food which it noisily ate. It then trundled off into the fernery where we have two hedgehog homes well placed so hopefully it will choose one and settle in.
An adult hedgehog has about 5,000 spines on its back, quite formidable protection and really modified hairs that can be raised for defence. They are about 1in (25mm) long and very sharp. Each spine lasts about a year and a replacement is grown when the older one drops out.
Hedgehogs are interesting characters and formidable predators on slugs, snails, birds' eggs, young and carrion, though mostly they eat beetles, caterpillars and earthworms.
We may observe late-born young, especially if first litters have been lost but these often do not survive the winter. Indeed, a mother, if disturbed in her nest, may eat newborn young, or simply abandon them, but may carry older ones by the scruff of the neck to a safer shelter, as squirrels often do.
Tis true occasionally a fox or badger may kill a hedgehog but road deaths are huge, as is habitat fragmentation, the latter a death knell for many wild creatures, and plants, too, come to that. I can't see either of the latter two problems lessening, nor governments taking action to solve the problems, despite the undoubted urgent need to do so.