My dog is lethargic and off his food today. Yesterday he was a bit sick -- no food in it, just very frothy.
The only possible cause I can think of is that when I was raking and sweeping in the garden yesterday he 'joined in' as he often does by licking the drive and the wall. Very odd behaviour. I'm guessing that in the wild, wolves would copy this sort of ground licking to exploit some mineral supply.
He froths at the lips a little when he is doing it.
Could it make him ill?