Top 5 animals showing dimorphism in size & appearance

Mandrill color & size

Male mandrills have brighter red faces and behinds, with dominant males showing the most vivid colours. Males are also much larger, weighing up to 82 pounds compared to 27 pounds for females.

Elephant seal noses

Male elephant seals develop large, trunk-like noses used for loud roars during mating season. Females lack this distinctive feature, which helps males assert dominance and communicate.

Lion manes & size

Male African lions have bushy manes that attract females and signify strength. Males are larger and can weigh twice as much as females, making lions unique among cats for sexual dimorphism.

Orangutan cheek flaps

Mature male orangutans develop large cheek flaps and throat sacs to show dominance. They are roughly twice the size of females and have longer, bushier hair, enhancing their imposing appearance.

Peafowl plumage