A penis cannot be enlarged by any exercise. You got what you were given, pal!
Keep in mind, there is no reason to enlarge a penis, unless one suffers from micropenis. A doctor could tell you if there are any surgeries to fix this problem.
Enlarged Penis
Yes, that is the natural color of a dog's erect penis.
jelging is a kind of penis enlargement exercise on wich you force your blood in your penis.
I believe it is called an enlarged penis, if he keeps passing out, oh crap, wrong question
Exercise, a finger, a penis, most objects.
The size of you penis varies from person to person and how you treat you body; be sure that you eat right and exercise.
Penis and testicles or scrotum
your penis gets bigger
This is totally up to the individual.
sex
This process is known as an erection. It is primarily caused by increased blood flow to the erectile tissue in the penis, specifically the corpora cavernosa. When sexually aroused, the arteries leading to the penis dilate, allowing more blood to flow in and fill the spongy tissue, resulting in a firm and enlarged penis.
Without actually seeing the penis, it's difficult to tell. Boars have a fibrous penis, so there shouldn't be much swelling during sexual arousal. I would suspect an infection in the penis, or possibly cancer in an older boar. A veterinarian can examine your boar and give you a more precise answer based upon a physical examination.