Penis
Domestic cats have barbed penises, with about 120–150 one millimeter long backwards-pointing spines. Upon withdrawal of the penis, the spines rake the walls of the female's vagina, which is a trigger for ovulation. Lions also have barbed penises. Male felids urinate backwards by curving the tip of the glans penis backward. When male cheetahs urine-mark their territories, they stand one meter away from a tree or rock surface with the tail raised, pointing the penis either horizontally backward or 60° upward.
Cat cognitive support diets
Omega-3 fatty acid also aids in uptake of glucose in the brain which is needed for energy for cognitive health. Though no studies in cats have been completed, it was found that rats with low levels of omega-3 fatty acids resulted in a decrease of glucose uptake in the brain.