I love this blog and love the hedgehog, and I'm sorry if you've already answered this, but why the hedgehog specifically??
It’s been a while, I think, since someone has asked about the hedgehog, so I don’t mind explaining.
I think a hedgehog is a good animal for representing autistics. Hedgehogs might look spiky, but if you treat them right, they can be very sweet and affectionate—something a lot of people never grasp about autistics. At the same time, treat a hedgehog poorly, scare it or make it angry, and it curls up in a tight ball with its spikes out.
It reminded me very much of my own moods and on the day I decided to make AH, I was feeling quite prickly. I felt like a hedgehog was an accurate representation of how I was feeling, and when I brought the idea up to other autistics here on Tumblr, they agreed. Thus Autistic Hedgehog was born.