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Interactive Data · Mammals

How much do familiar mammals differ in weight and length?

Switch metrics, reorder the ranking, choose any animal as a reference, or reveal smaller values with a logarithmic scale.

  • 34 species
  • 3 metrics
  • Interactive ranking
  • Relative length scale
  • Whale length & weight ranking
  • CSV download
Illustrations of an Asian elephant, white rhinoceros, giraffe, American bison, polar bear, brown bear, tiger, lion, capybara, gray wolf, and European rabbit
Illustrations identify each species; their sizes in this image are not to scale. Use the length scale below to compare relative sizes.

Animal mini encyclopedia

Search, filter and compare the 34 land mammals in this dataset.

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Interactive mammal ranking

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METRIC
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MAX ÷ MIN–among selected animals

Relative length scale

Head-body length of 34 species on one shared scale

The ochre lines show head-body lengths on the same scale. Compare the line lengths; the illustrations are not to scale.

Giraffe = 100%
  1. Giraffe 4.18 m
  2. Moose 2.93 m
  3. Black rhinoceros 2.85 m
  4. American bison 2.85 m
  5. White rhinoceros 2.59 m
  6. Reindeer 2.22 m
  7. Lowland tapir 2 m
  8. Polar bear 1.99 m
  9. Asian elephant 1.92 m
  10. Lion 1.84 m
  11. Tiger 1.82 m
  12. Western gorilla 1.59 m
  13. White-tailed deer 1.51 m
  14. Asian black bear 1.51 m
  15. Brown bear 1.48 m
  16. Cheetah 1.48 m
  17. Cougar 1.4 m
  18. American black bear 1.38 m
  19. Leopard 1.38 m
  20. Wild boar 1.35 m
  21. Giant panda 1.35 m
  22. Jaguar 1.33 m
  23. Spotted hyena 1.3 m
  24. Aardvark 1.25 m
  25. Capybara 1.21 m
  26. Giant anteater 1.12 m
  27. Gray wolf 1.05 m
  28. Japanese macaque 0.83 m
  29. Chimpanzee 0.8 m
  30. Red fox 0.63 m
  31. Raccoon 0.48 m
  32. Nine-banded armadillo 0.44 m
  33. Ring-tailed lemur 0.42 m
  34. European rabbit 0.4 m
Head-body length excludes the tail. The page cannot show the animals at life size; it shows their relative lengths on a shared scale.

Dataset for 34 land mammals

Check the values and scientific names in the table below.

Display values are rounded. Source units were converted from g, mm, and months to kg, m, and years.
Animal Scientific name Diet group Adult body mass
(kg)		Adult head-body length
(m)		Maximum longevity
(years)
Asian elephant Elephas maximus Herbivore 3,269.81.9280
White rhinoceros Ceratotherium simum Herbivore 2,285.92.5950
Giraffe Giraffa camelopardalis Herbivore 964.74.1836.3
American bison Bison bison Herbivore 624.62.8533
Polar bear Ursus maritimus Carnivore 371.71.9938.2
Brown bear Ursus arctos Omnivore 196.31.4850
Tiger Panthera tigris Carnivore 161.91.8226.3
Lion Panthera leo Carnivore 158.61.8430
Capybara Hydrochoerus hydrochaeris Herbivore 48.11.2112
Gray wolf Canis lupus Carnivore 31.81.0529.5
European rabbit Oryctolagus cuniculus Herbivore 1.60.418
Moose Alces alces Herbivore 461.92.9327
Western gorilla Gorilla gorilla Herbivore 112.61.5954
Chimpanzee Pan troglodytes Omnivore 450.860
Giant panda Ailuropoda melanoleuca Herbivore 1181.3530
Wild boar Sus scrofa Omnivore 84.51.3521
Giant anteater Myrmecophaga tridactyla Insectivore 29.51.1226
Spotted hyena Crocuta crocuta Carnivore 63.41.341.1
Cheetah Acinonyx jubatus Carnivore 50.61.4819
Leopard Panthera pardus Carnivore 52.41.3823
Jaguar Panthera onca Carnivore 83.91.3323
Reindeer Rangifer tarandus Herbivore 109.12.2220.2
Japanese macaque Macaca fuscata Omnivore 10.10.8333
Red fox Vulpes vulpes Omnivore 4.80.6315
Raccoon Procyon lotor Omnivore 6.40.4821
Cougar Puma concolor Carnivore 541.420
American black bear Ursus americanus Omnivore 110.51.3832
Asian black bear Ursus thibetanus Omnivore 99.71.5135.2
Lowland tapir Tapirus terrestris Herbivore 169.5235
Aardvark Orycteropus afer Insectivore 56.21.2524
Nine-banded armadillo Dasypus novemcinctus Insectivore 3.90.4415
Ring-tailed lemur Lemur catta Omnivore 2.60.4230
Black rhinoceros Diceros bicornis Herbivore 995.92.8547
White-tailed deer Odocoileus virginianus Herbivore 75.91.5123

Source: PanTHERIA 1.0 (Jones et al., 2009) · checked 2026-09-04

How to read this comparison

Representative species values

PanTHERIA consolidates species-level values from multiple references. Sex, age, subspecies, and individual condition can produce substantial variation.

Head-body length excludes the tail

Head-body length is the length from the head to the base of the tail. A giraffe’s standing height and a bear’s body length are therefore not being mixed.

Why use a logarithmic scale?

The Asian elephant weighs over two thousand times the European rabbit in this dataset. Log scale keeps that range while making smaller mammals visible.

Taxonomy and update date

Names follow the Wilson & Reeder 2005 taxonomy used by PanTHERIA 1.0. These traits are relatively stable, but source estimates and taxonomy can be revised.

Ocean comparison · NOAA Fisheries

Length and weight ranking for nine whale species

Switch between reported length and weight values from NOAA Fisheries Quick Facts. Source units are standardized to metres and metric tonnes for comparison.

Metric
Order
Nine whale species on one shared length scale, ordered from top left: blue, fin, bowhead, sei, humpback, sperm, North Atlantic right, gray, and minke whale.
Illustrations are fixed in largest-to-smallest order from the top left and scaled from the reported upper lengths. Shape and colour aid identification; the numeric values are authoritative.

Reported length upper bound · Largest first · 9 species

  1. 1 Blue whaleBalaenoptera musculus · Baleen whale 33.5 m
  2. 2 Fin whaleBalaenoptera physalus · Baleen whale 25.9 m
  3. 3 Bowhead whaleBalaena mysticetus · Baleen whale 18.9 m
  4. 4 Sei whaleBalaenoptera borealis · Baleen whale 18.3 m
  5. 5 Humpback whaleMegaptera novaeangliae · Baleen whale 18.3 m
  6. 6 Sperm whalePhyseter macrocephalus · Toothed whale 15.8 m
  7. 7 North Atlantic right whaleEubalaena glacialis · Baleen whale 15.8 m
  8. 8 Gray whaleEschrichtius robustus · Baleen whale 14.9 m
  9. 9 Minke whaleBalaenoptera acutorostrata · Baleen whale 10.7 m
Every bar starts at zero. For a length range, the upper end is used; “up to about” values are retained as approximate guides.

The blue whale is about 3.1 times the minke whale by the reported length values, and about 16.5 times by the reported weight comparison values.

How values were standardized

Length uses exactly 1 ft = 0.3048 m. Weight uses 1 lb = 0.45359237 kg and 1 U.S. ton = 0.90718474 metric tonnes. Values are rounded to one decimal place only for display.

How to interpret the reported values

For ranges, the upper end is used. “About” and “up to” values remain approximate. These are comparison values, not averages or records for one individual.

Source: NOAA Fisheries species profiles · checked 2026-09-04