Parrot uses his broken beak to become a dominant male
Bruce is a kea with just half a beakXimena Nelson In 2013,…
Male octopuses have a favourite arm that they mostly use for sex
A male webfoot octopus (Amphioctopus fangsiao) with its hectocotylus curled up (upper…
Lifestyle Choices Are Sabotaging Male Fertility
There’s a significant decline in sperm counts over recent decades, highlighting a…
