
What with there being otubreaks of parvo in various parts of the country at the moment (including in vaccinated dogs) I'd play safe if I was you and call the vet first thing tomorrow and not wait until Saturday. Better safe than sorry. There are also plenty of cases of Seasonal Canine Illness and my own vets sent out an e-mail this week to all their clients warning about walking dogs in woods, and the symptoms given for SCI seem very similar -vomiting, diarrhoea and lethargy. They say to contact your vet immediately if you notice these signs within 72 hours of walking in woods.