Obsession

Ever since Obi's accident 4 years ago, he seems to have developed an obsession with Ethan's cuddly toy collection. He constantly goes into Ethan's bedroom, drags out a toy, then walks round the house with it in his mouth, yowling loudly, before (for want of a better word) "kneading" it for a long time. I know his eyesight isn't great but surely he can see that Woolly the spider isn't a new companion for him!!