My german noise is runny and warm

Question
I changed my german shepards food last night he is about 4 months old I feed him this morning . I noticed this evening he had not eaten anything but he has had direhea today and he still not eaten and his noise is runny and warm his pawns are warm what could it be and what could I do to help him

Answer
hello there,
I always worry about young dogs with diarrhoea, as they can very quickly get quite sick when they are little. It may be just the diet change causing the diarrhoea, but that would be unlikely to cause a nasal discharge. I would suggest taking him to your closest vet for a check up. Has he been vaccinated? Do you get parvovirus in your area?
Sorry I can't be of any more help. I don't want to give you bad advice and I think this is something that does need to be checked by your vet.

Eloise