How long do dog hives last?

How long does it take for hives to go away on my dog. I give her 2 benadryl a day for the last 2 days. She may have eaten mushrooms that were in the backyard. read more

In most cases the hives generally go away within a twenty four hour period, however the most extreme cases the hives can last substantially longer. The causes of dog hives can number in the hundreds, and being able to identify exactly what caused the hives to appear can go a long way in helping get your pet receive the proper medical attention. read more

Last time my dog got hives I took him to the vet for a steroids and antihistamines. Granted he also was having a pretty bad allergic reaction and couldn't keep anything in him so I think a bit more serious than your guy. If he's not acting in pain, sick, or anything I'd probably give it another day or so before going to see a vet. read more