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sexual dimorphism

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The Blanket Octopus Has The Most Extreme Sexual Dimorphism In The Animal Kingdomimage of blanket octopus female next to blanket octopus male, the female is 6 feet long the male is just 1 inch

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The Blanket Octopus Has The Most Extreme Sexual Dimorphism In The Animal Kingdomimage of blanket octopus female next to blanket octopus male, the female is 6 feet long the male is just 1 inch
nature-iconanimals

The Blanket Octopus Has The Most Extreme Sexual Dimorphism In The Animal Kingdom

clock-iconJuly 15, 2025
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Why It’s So Damn Hard To Tell The Sex Of A DinosaurDinosaur with eggs

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Why It’s So Damn Hard To Tell The Sex Of A DinosaurDinosaur with eggs
nature-iconPalaeontology

Why It’s So Damn Hard To Tell The Sex Of A Dinosaur

clock-iconJune 5, 2025
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Sex Differences In The Human Brain Observed From Birth In Largest Study Of Its Kinddrawing of a male human silhouette in blue and a female human silhouette in pink, both with pink and red brains drawn in. The heads are both facing left and there is a red exclamation mark and a purple question mark between them

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Sex Differences In The Human Brain Observed From Birth In Largest Study Of Its Kinddrawing of a male human silhouette in blue and a female human silhouette in pink, both with pink and red brains drawn in. The heads are both facing left and there is a red exclamation mark and a purple question mark between them
health-iconneuroscience

Sex Differences In The Human Brain Observed From Birth In Largest Study Of Its Kind

clock-iconJanuary 21, 2025
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For Dusky Pipefish, Males Get Pregnant And Sex Chromosomes Don't ExistVery small skinny pipefish with a close up of its head and long snout on a black background.

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For Dusky Pipefish, Males Get Pregnant And Sex Chromosomes Don't ExistVery small skinny pipefish with a close up of its head and long snout on a black background.
nature-iconanimals

For Dusky Pipefish, Males Get Pregnant And Sex Chromosomes Don't Exist

clock-iconJanuary 7, 2025
share96

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Meet The Trilobite Beetles: Prehistoric-Looking Insects With Peculiar Sex Livesblack and red trilobite beetle on a tree

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Meet The Trilobite Beetles: Prehistoric-Looking Insects With Peculiar Sex Livesblack and red trilobite beetle on a tree
nature-iconanimals

Meet The Trilobite Beetles: Prehistoric-Looking Insects With Peculiar Sex Lives

clock-iconAugust 6, 2024
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Male Dragonfish Exhibit An “Extremely Rare” Trait To Date In The DarkMalacosteus niger fish with large eyes and dark body

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Male Dragonfish Exhibit An “Extremely Rare” Trait To Date In The DarkMalacosteus niger fish with large eyes and dark body
nature-iconanimals

Male Dragonfish Exhibit An “Extremely Rare” Trait To Date In The Dark

clock-iconJuly 29, 2024
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Male and Female Mammals Have Different Pain Receptors And We Don’t Know Whyman and woman sat on sofa, turning away in visible pain

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Male and Female Mammals Have Different Pain Receptors And We Don’t Know Whyman and woman sat on sofa, turning away in visible pain
health-iconneuroscience

Male and Female Mammals Have Different Pain Receptors And We Don’t Know Why

clock-iconJune 11, 2024
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We’ve Learned Why Giraffes Stick Their Necks Out – And It’s Not For SexThree giraffe on Kilimanjaro

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We’ve Learned Why Giraffes Stick Their Necks Out – And It’s Not For SexThree giraffe on Kilimanjaro
nature-iconanimals

We’ve Learned Why Giraffes Stick Their Necks Out – And It’s Not For Sex

clock-iconJune 4, 2024
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Males Are Larger Than Females, Or Are They? New Data Challenges 100 Years Of Biastwo blue-eyed lemurs on a branch staring at the camera; the male has all-black fur while the female has rust-colored fur; they are cuddling.

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Males Are Larger Than Females, Or Are They? New Data Challenges 100 Years Of Biastwo blue-eyed lemurs on a branch staring at the camera; the male has all-black fur while the female has rust-colored fur; they are cuddling.
nature-iconanimals

Males Are Larger Than Females, Or Are They? New Data Challenges 100 Years Of Bias

clock-iconMarch 12, 2024
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Turns Out, Male Dominance In Primate Groups is Not The Default After AllTwo marmosets sit on a concrete wall looking down at the camera. They both have big fluffy white tufts on either side of their heads. Above the marmosets is a background of green leaves and branches.

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Turns Out, Male Dominance In Primate Groups is Not The Default After AllTwo marmosets sit on a concrete wall looking down at the camera. They both have big fluffy white tufts on either side of their heads. Above the marmosets is a background of green leaves and branches.
nature-iconanimals

Turns Out, Male Dominance In Primate Groups is Not The Default After All

clock-iconJanuary 19, 2024
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Vivid Colors Of Rare Half-Male, Half-Female Bird Captured In Incredible FootageHalf blue, half green bird, with small yellow beak, sitting on a tree branch.

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Vivid Colors Of Rare Half-Male, Half-Female Bird Captured In Incredible FootageHalf blue, half green bird, with small yellow beak, sitting on a tree branch.
nature-iconanimals

Vivid Colors Of Rare Half-Male, Half-Female Bird Captured In Incredible Footage

clock-iconDecember 12, 2023
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Genetics Behind Differences In Male And Female Organs Decoded For First Timemale and female lion lying together on a rock

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Genetics Behind Differences In Male And Female Organs Decoded For First Timemale and female lion lying together on a rock
nature-iconanimals

Genetics Behind Differences In Male And Female Organs Decoded For First Time

clock-iconNovember 3, 2023
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The Secret To Learning A Dinosaur’s Sex Is All In The Leg BonesDeinocheirus on a green background

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The Secret To Learning A Dinosaur’s Sex Is All In The Leg BonesDeinocheirus on a green background
nature-iconanimals

The Secret To Learning A Dinosaur’s Sex Is All In The Leg Bones

clock-iconJune 15, 2023
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Zuri The 18-Year-Old Female Lion At Kansas Zoo Grows A ManeFemale lioness with a pale sandy mane lying in sunshine

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Zuri The 18-Year-Old Female Lion At Kansas Zoo Grows A ManeFemale lioness with a pale sandy mane lying in sunshine
nature-iconanimals

Zuri The 18-Year-Old Female Lion At Kansas Zoo Grows A Mane

clock-iconOctober 31, 2022
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Neglected Female Mouse Brains Could Hold Keys To Depression And Anxietyarticle image

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Neglected Female Mouse Brains Could Hold Keys To Depression And Anxietyarticle image

Neglected Female Mouse Brains Could Hold Keys To Depression And Anxiety

clock-iconMay 23, 2018