Webkinz Hedgehog. Webkinz are lovable plush stuffed animal adopt-a-pets with a secret code that lets you enter Webkinz World--a place where your Webkinz Hedgehog comes to life and becomes your pet! A Webkinz interactive pet is fun and educational. Webkinz plush are a velvety soft pet about 8 1/2 inches long. Check the tag on his neck for a secret code that brings him to life on the Web.