My boy came in and miaowed at me, pawing my hand as I was building Lego (!) and I noticed he was leaving a trail of blood - he has split one of his toe pads and it looks very sore 
I've stopped him going out so it doesn't get dirty but should I wash it and take him to the vet? He's licked it which made it pour with blood again and now he's lying on a bathmat to try and save the cream carpet but it looks very deep, bless him.