As is the case for some people, some dogs can also be allergic to ant bites. Sadly, the only real way to know if your dog is allergic is if he has a reaction to an ant bite. It’s important to keep ant beds and ants out of your yard to protect yourself and your pets. If your dog does get an ant bite, keep a watch on it to make sure it doesn’t swell up or become extremely irritated. Severe allergic reactions to ants for dogs generally start to show themselves around 20 minutes after the bite. However, more mild reactions may not show up for right away. The less severe allergic reaction could show up anytime within 24 to 48 hours of the bite. Symptoms for allergic reactions may include swelling, hives, or even difficulty breathing.Contact your vet clinic Goodyear, AZ for treatment instructions.