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7 of the Most Dramatic Examples of Sexual Dimorphism


Are you wondering why females and males of the same species may appear completely different from one others? It’s due to a condition called sexual dimorphism. It typically is caused through this process called sexual selectivity through mating in competition.

Sexual dimorphism is manifested in a variety of fascinating ways, including size or coloration, behaviour, and the presence of other sexual traits like Tail feathers breasts, breasts, or antlers.Here are 9 amazing evidence of sexual dimorphism within the world of animals.


Mandrills are widely believed as the mammal with the highest degree of sexual dimorphism. When you look at the difference between males and females one of the most obvious differences is that males display more vivid coloration of their backs and faces. 

There’s even a distinct difference between males and females in similar groups, with most dominant adult male showing the most vibrant red.A striking distinction between male and female mandrills they are both large. While the average female weighs around 27 pounds, males could weigh as much as 85 pounds. Blue Birds in Michigan

Triplewart Seadevil Anglerfish

In a depth of as much as 6,600 feet below surface of the sea, completely hidden from human eyes, the triplewart seadevil anglerfish is the most bizarre and bizarre example in sexual dimorphism. Females of this species average around 1 foot in size, and males are only the size of a half-inch. This stark difference in size is due to sexual parasites, where males join females and are permanently bonded to them by tissues and circulatory systems that are interconnected.


Alongside their bigger size male pheasants are different from females due to their vivid attractive plumage, decorative and long tails. Female pheasants however, are very minimal in appearance. This makes it much easier for hunters to differentiate between species since only Roosters (males) are permitted to hunt in the U.S.

Elephant Seals

They are named after the males’ huge proboscises (noses) which grow larger in puberty, and end into looking like elephant trunks that are stunted. Their proboscises allow them to generate incredibly loud roars while they gather in their U.S. West Coast during the mating season, which runs from December through March.The beats they make using their infamous snouts helps to identify the

individuals. Research suggests that they may be the only nonhuman mammal that use their rhythms to distinguish others of their species. 1In addition to their proboscises and genitals, males are also able to weigh 10 times the weight of females. The differences in size are more evident in species from the south. 2

Orange Tip Butterflies

Similar to elephant seals These butterflies are named for the sexual dimorphism that they display. The striking orange tips on the front wings of males make them distinctive. Females, with black wing tips, are not as than colorful, even though both sexes have a similar mottled green appearance, with their wings closed. This can trick predators into thinking they’re fallen leaves.

Since orange isn’t the most common color used by butterflies The Natural History Museum of London claims that the coloration of the wingtips are another tactic to defend themselves that they use to trick predators into believing they’re poisonous. And with the peptide-toxin glacontryphane-M in their wings they will not lie. 3

African Lions

The famous manes that are bushy of African lions are strongly connected to sexual selection. Research studies have proven that female lionesses are more likely select a partner with hair that is dark and thick. 4

The lion is the only cat who exhibit sexual dimorphism. It was once thought that males’ hair were developed to protect their necks during fights with males, new research has disproved this theory When lions fight one against one another, they tend to focus on the hips and back. The theory is now that it’s just a sign of masculinity. Male lions are larger and can be twice as large than female lionesses.

 Mandarin Ducks

Although both genders from the Mandarin duck are beautiful in their plumage, males are particularly attractive with their red bill with prominent crests and an the array of feathers that are colorful. Males sport “whiskers” which are affixed to their bill and have two white lines that run parallel to their chests of purple. Additionally, they have an bright orange “sail” in their backs.

With luck they will find them the chance to be a partner for the rest of their lives. Because of their monogamy they’re now regarded as a symbol of love and fidelity across Asia and the region they come from.



When they reach sexual maturation, male orangutans start to grow larger throat sacs and cheek flaps intended to display their dominance. If there’s two males in an extended family unit, the dominant male will display larger cheek flaps. When they reach maturity, they’ll employ their throat sacs that are large to produce their distinctive guttural barks.

Apart from this distinct facial shape male orangutans are typically two times to two thirds the size of females as The Orangutan Conservancy says. 5 They also appear larger, with hair being larger and more bushy than male counterparts’.

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