The scent fluid which is the special secretion of these glands is contained in two sacs located beneath the skin, one on each side of the vent. Each sac is embedded in a powerful, gizzard-like, muscular envelope the contraction of which discharges the scent fluid. Fig. 1 and Fig. 2 show general location and form.
Within the rectum just beyond the sphincter muscle which ordinarily keeps the vent closed are two papillae from which the scent is discharged. Each papilla is connected with one of the scent sacs by a discharge duct.
Ordinarily the discharge papillae are not visible but when the skunk discharges the scent fluid the tail is raised and doubled close along the back, the vent is relaxed and turned outward to such an extent that the pappillae becomes external and from them the scent is discharged and directed with remarkable accuracy.
The skunk takes great care not to get any of the scent on its tail or fur and the slightly skunky odor which fur garments sometimes have is usually the result of carelessness in killing or skinning the animal. To kill without scent the backbone should be broken by a quick blow or the skunk should be drowned.
When held by the tail with head hanging down and with tail and backbone in a straight line the skunk cannot control the muscles which evolve the rectum and discharge the scent. Care must be taken that the skunk does not twist or climb upward. It should be held low to keep its interest centered on the ground which it will strive to reach.
Directions for Removing the Scent Sacs From Live Skunks Without the Escape of Any of the Scent Fluid.
FIG. 1, X-RAY OF SCENT SYSTEM.
This operation is simple and may be readily learned by anyone who will follow these instructions carefully. No anaesthetic is needed.
1. The beginner should dress in old clothes or overalls and as a precaution should wear goggles to protect the eyes in case of accident. An old hat or a paper sack worn as a cap will protect the hair. With these safeguards the learner feels perfectly at ease and therefore the chance of accident is much lessened while acquiring proficiency.