I don't think you need to worry about the Frontline causing this. If Daisy and Teddy have not been out of the yard, sounds like maybe it might be food, but it's still weird that they both would come down with it.
Max and Teddy did not have any changes in their food, so that why I'm convinced it was a virus. Also because it lasted only a day. Teddy was first, then Max had it 48 hours later. Like Mark wrote, I think they passed it to one another.
Hydration: my boys are really good water drinkers, and I just kept an eye on their gums, making sure they stayed pink and wet to the touch. The boys were a bit lethargic from the vomiting though.
I think I withheld food for the day so that they didn't keep vomiting, and to give their systems a rest. We don't have any hypoglycemia or other health concerns related to withholding food though.
__________________ Kristin, Max and Teddy
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