Has anyone ever noticed discolouration of their lamb's teeth? I had one which seemed a bit agitated which I presumed was flies. I noticed a bubble showing from his mouth (only one and no dribbling). When I caught him last night to check over his teeth at the base were black as if coated with tar. What I don't know is if he has eaten something in hedgerow that would have done it or something else.
He is pooing and weeing normally so must be eating, doesn't look thin. But does look a bit depressed and never see him chewing cud like others.
Any suggestions? He is approx 3 months old.