i don't have a dogs.
The two would not be related.
medicine
No, ear infections are NOT contagious.
no, but it can give you an ear infection.
Either something stuck in the ear, ear mites, ear infection or yeast infection of the ear. All easily treated at the vet.
Dogs ears are pretty close to human ears. So the answer to your question is yes they can.
you can mix wax and water and put it on the dogs ear for 2 hours then remove
Disorders of the inner ear, tumor or injury causes vestibular disease in dogs. Such disorders include an infection of the middle or inner ear.
Yes dogs do but if it turns brown or black it means that they need to see a vet because of an ear infection.
If there is any discharge or foul odor coming from your dogs ears, then it has an ear infection. If you see clumps of brown or black, your dog may have ear mites. Check with your vet to be sure.
Penicillin is not always the best drug to give to a horse, you should consult with your equine veterinarian to get an exact idea of what medicine should be used for the ear infection.