Mammalries
Educational Diagrams

Bat

Chiroptera · Interactive

Two pectoral teats with milk composition that shifts dramatically across the 4-week lactation

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Bear

Ursidae · Interactive

Ultra-rich 20–25% fat milk produced entirely from body fat during hibernation

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Cow

Bovidae · Interactive

Click & drag to milk — four-quarter udder producing 25–35L daily

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Deer

Cervidae · Interactive

Compact four-teat inguinal udder with seasonal lactation tied to fawning

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Dog

Canis lupus familiaris · Interactive

Ten teats in five pairs — inguinal rear teats produce ~40% of total milk output, driving pup competition

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Dolphin

Delphinidae · Interactive

Paired mammary slits with muscular milk ejection — nursing in 5-second bursts while swimming

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Domestic Cat

Felidae (Felinae) · Interactive

Eight abdominal teats in four pairs — kittens develop firm teat-order preferences from first nursing

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Elephant

Proboscidea · Interactive

Thoracic mammary glands positioned between the front legs

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Giraffe

Giraffidae · Interactive

Four-teat udder positioned six feet high with ultra-rich 12.5% fat milk

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Lion

Felidae (Pantherinae) · Interactive

Four inguinal teats with pride allosuckling — lionesses cross-nurse cubs in a synchronized crèche

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Monkey

Cercopithecidae · Interactive

Two pectoral teats with dilute, lactose-rich milk — nursing on demand for up to two years

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Opossum

Didelphidae · Interactive

13 teats in a horseshoe — marsupial milk that changes composition per lactation stage

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Platypus

Monotremata · Interactive

Milk secreted through skin patches — no teats at all

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Whale

Cetacea · Interactive

Concealed mammary slits with high-fat milk ejection for underwater nursing

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Zebra

Equidae · Interactive

Two-teat inguinal system with low-fat, high-lactose milk composition

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