I think Chester tore his nail out

This evening I noticed that one one of Chester's front paws was a dark brownish-reddish mark where one of his claws should be. He hasn't been acting like himself today i.e. not playing, but eating, drinking and toileting fine and I'm thinking this might be the reason why. Is there anything I can give him or anything I should do for him until I call the vet in the morning? It's not bleeding now. Thanks for any help.

 

False Alarm. It was just something stuck to his nail. He is fine.

 

Glad he’s ok!

 

Oh good