Dogs can have allergies just like humans.
There are many symptoms of allergies including itching (often with scratching or nibbling of the itchy area), coughing or wheezing, discharge, and more. They may have persistent allergies, seasonal allergies, or food allergies.
While we are not vets, we will let you know if we see that your dog is itching a lot or has some kind of irritation.
If you suspect your dog may have allergies, we recommend consulting your vet for diagnosis and treatment.