Is it normal for dogs to have diarrhoea after vaccination?

It is normal for dogs to have diarrhoea after vaccination, but take them to the vet promptly for examination if they do not improve after more than 48 hours. You can fast your dog for half a day or a day after the diarrhoea and feed your dog with warm water mixed with some probiotics. If the diarrhoea improves, you can feed your dog a light, easily digestible liquid diet. During this time, make sure you provide your dog with plenty of clean water to avoid dehydration. Keep a close eye on your dog for any other adverse reactions.