It could be any one of several things, including a hernia, which is a loop of bowel that has gotten trapped in the inguinal canal.
If you have a knot in your pubic area you should have it examined by a doctor to determine if it is something that needs treatment or if it is benign.
Locate the os bone, and carefully grip the base with one hand while holding the prepuce in the other. Pull the prepuce back whilst pushing the os bone forward revealing the glans Keep a firm but gentle grip as you push the glans further to see the bulbus glandis. 4: Begin a gentle rhythmic squeezing of the os through the pupace directly behind the exposed bulbus glandis. 5: With your thumb and a finger, gently encircle the shaft directly behind the expanding bulbus glandis and continue rhythmically squeezing. Continue stimulating the bulbus glandis in this fashion until it is fully engorged. Ongoing stimulation will lead to the full engorgement of the longa glandis as well. I put this together from a few sources. I had to make small edits to the proper technical language to satisfy posting rules.
In short, yes. The full biological/zoological answer, however, is much more complicated. The knot one would normally find in a dog penis, known scientifically as the Shrodenburger Knot, is based on the type of knot one would normally use to tie ones shoes. The knot found in a skunk penis is of a different sort, and is commonly compared to the type of knot one might use whilst sailing, or tying a noose.
Our English Mastiff's penis is just over 14 inches long with a knot that is right at 6 inches in girth.
Probably bigger than a baseball. Why would you want to know that though?
Typical length from the knot to the tip is around 8 inches when fully erect.
Typical length (from the knot to the tip) is 17 - 18 cm (around 7 inches) when erect.
No, it is not appropriate to touch a dog's penis without a valid reason and proper handling. Additionally, attempting to pull out a knot is not advisable as it may cause pain or injury to the dog. If you notice any abnormalities, it's best to consult a veterinarian for proper guidance and treatment.
Umbilical knot
It's probably not swollen, when a dog has a full erection his penis will be quite large, often larger than a human's penis. The big lumps at the base of his penis is probably the part called the knot.
A knot forms in wood when a branch or limb grows out of the tree trunk, causing a concentration of grain and density in that area.
That is called the knot, it can only be seen when the dog has an erection. All dogs have this. When a dog has sex, the knot keeps his penis stuck inside her for a while, it increases the chances of pregnancy. The male dog usually turns around, so that his penis bends 180o around, and they are facing away from eachother, then he ejaculates, and then the knot goes away and he can take his penis out. Try looking around on Google.
In dogs, a "knot" refers to the bulbus glandis, which is an erectile tissue structure located at the base of the male canine's penis. When a male dog mates, the bulbus glandis swells and forms a "knot" that helps to secure the mating pair together. The appearance of the knot can vary depending on the size and breed of the dog, but it typically resembles a rounded, swollen mass at the base of the penis.