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.
Caspian tiger
The Caspian tiger ranked among the largest cats that ever existed. Males had a body length of and weighed ; females measured in head-to-body and weighed . Maximum skull length in males was , while that of females was . Its occiput was broader than of the Bengal tiger.