[ WP ] Humans have five senses , while every other race/species has four

Sarah sat with her dog. She whispered soothing words into its ear, threw a toy for it to chase, gave it a treat, took it for a walk, where it sniffed the area where another dog had peed... but there's one thing she never did. 
 
 In her Science class, Sarah had been told of a special technique that humans had that nothing else did. Touch. Just... touch. Simple physical sensation. Sarah thought this strange at first. How could an animal survive, let alone thrive, without being able to feel things? Why could humans feel while animals could n't? 
 
 Sarah glanced at her dog. She rubbed her hand up and down its chocolate-colored coat. It felt good to Sarah, even if the dog did n't respond. She tried talking to the dog while she pet it, and the dog made cute noises. This was close enough for Sarah.
