The Komodo dragon has also been observed intentionally startling a pregnant deer in the hopes of a miscarriage whose remains they can eat, a technique that has also been observed in large African predators

The sensitive olfactory organs help the male to detect the pheromones that signal the proximity of a female anglerfish. When he finds a female, he bites into her skin, and releases an enzyme that digests the skin of his mouth and her body, fusing the pair down to the blood-vessel level. The male then atrophies into nothing more than a pair of gonads, which releases sperm in response to hormones in the female’s bloodstream indicating egg release.

The blue-ringed octopus, at the size of a golf ball, is currently one of the most toxic known sea creatures and despite its size, the blue-ringed octopus carries enough poison to kill 26 adult humans within minutes. There is no blue-ringed octopus antivenom available.