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How does the cow see?

The cow (Bos taurus) is a mammal in the order Artiodactyla. Its eyes belong to the vision type Grazing ungulate panorama: 2 cones, horizontal visual streak, near-panoramic field with a rear blind spot, narrow binocular zone; reindeer add UV lens transmission.

Measured in this species: colour, sharpness, field of view, foveas and night vision. Measured core: measured values on at least 3 of the 6 dials. Every value below carries its evidence level and sources; nothing is typed by hand.

Sample scene drawn in code: a face with red lips, a green shirt, red and green apples, flowers and a colour strip, as a person sees it.
The sample scene as a person sees it.
The same sample scene rendered by the See Like Animals engine for the cow's eyes, using the values in the table below.
The same scene rendered for the cow (60° field of view, daylight).
See your photo as the cowThis species is part of the full catalogue in the tool (full unlock). Your photo stays on your device.

What stands out

The six dials

Evidence levels: how the tiers work. "Measured" means a value measured in this species; "Estimated" values come from a close relative or an eye-size formula.

Vision values for the cow (Bos taurus), catalogue-v1
DialValueEvidenceSources
ColourColour receptors
2 receptor classes: 438 nm (VS/SWS (violet)), 554 nm (LWS (long))
measured in this species
Measured[1][2]
SharpnessAcuity
4.98 cycles per degree
median of 1 behavioural rows (method priority rule)
Measured[3]
Field of viewBinocular overlap
35.5°
median of 2 rows (eyes-at-rest rows preferred)
Measured[4][5]
Total field of view
350°
group default: median total field of vision type V04 within phylum Chordata in species-v1: Equus caballus
Group default[6]
Blind area behind the head
10°		Group default[6]
Eye placement
lateral
frontal if binocular overlap >= 60 deg, else lateral
Derived[4][5]
Sharp zones (foveas)Number of foveas
0
fovea_present / area_centralis_type (retinal topography; count 1 = fovea present, 0 = none)
Measured[7]
Fovea type
anakatabatic area, area centralis, horizontal streak		Measured[7]
Night visionActivity pattern
diurnal
mode of 7 rows (of 7 rows): diurnal; photopic
Measured (not re-verified)[8][9][10][1][11][12]
Pupil shape
horizontal		Estimated[13]
Reflective layer (tapetum)
yes		Measured[14][15]
Rods vs cones
cone-dominated
nocturnal -> rod-dominated; crepuscular / cathemeral / mixed -> mixed; diurnal -> cone-dominated
Derived[8][9][10][1][11][12]
Motion (flicker fusion)Flicker fusion frequency
60 Hz
median of 1 relatives in family Bovidae: Ovis aries
Estimated[16]

Comparisons

Related animals

More mammals: all mammals with measured vision data.

Sources

  1. Longcore T. 2023. A compendium of photopigment peak sensitivities and visual spectral response curves of terrestrial wildlife to guide design of outdoor nighttime lighting. Basic Appl Ecol 73:40-50. doi:10.1016/j.baae.2023.09.002. doi.org/10.5281/zenodo.8432720
  2. Müller B, Glösmann M, Peichl L, Knop GC, Hagemann C, Ammermüller J (2009) Bat eyes have ultraviolet-sensitive cone photoreceptors. PLoS ONE 4:e6390
  3. Caves EM, Fernandez-Juricic E, Kelley LA (2024) Ecological and morphological correlates of visual acuity in birds. J Exp Biol 227(2): jeb246063. Supplementary Table S1.. doi.org/10.1242/jeb.246063
  4. Heesy CP 2004. On the relationship between orbit orientation and binocular visual field overlap in mammals. Anat Rec 281A:1104, Table 1. doi.org/10.1002/ar.a.20116
  5. Heffner RS, Heffner HE 1992. Visual factors in sound localization in mammals. J Comp Neurol 317:219, Table 1 (via Evo-M1 sensory merge). doi.org/10.1002/cne.903170302
  6. species_v1:Timney & Keil 1992
  7. Kopania EEK, Clark NL. 2025. Mammalian retinal specializations for high acuity vision evolve in response to both foraging strategies and morphological constraints. Evolution Letters 9: qrae072. Supplementary Tables S1-S2.. doi.org/10.1093/evlett/qrae072
  8. Anderson SR, Wiens JJ. 2017. Out of the dark: 350 million years of conservatism and evolution in diel activity patterns in vertebrates. Evolution 71:1944-1959. Dryad doi:10.5061/dryad.fg700. doi.org/10.5061/dryad.fg700
  9. Borges R, Johnson WE, O'Brien SJ, Gomes C, Heesy CP, Antunes A (2018) Adaptive genomic evolution of opsins reveals that early mammals flourished in nocturnal environments. BMC Genomics 19:121
  10. Wilman et al. 2014 EltonTraits 1.0, MamFuncDat.txt. doi.org/10.6084/m9.figshare.3559887.v1
  11. Schmitz L, Motani R. 2011. Science 332:705-708, SOM. doi.org/10.1126/science.1200043
  12. Moura et al. 2024. A phylogeny-informed characterisation of global tetrapod traits addresses data gaps and biases. PLoS Biol 22:e3002658. TetrapodTraits v3.0.1.. doi.org/10.5281/zenodo.22536349
  13. Banks MS, Sprague WW, Schmoll J, Parnell JAQ, Love GD. 2015. Science Advances 1:e1500391. doi.org/10.1126/sciadv.1500391
  14. Fornazari GA, Montiani-Ferreira F, Filho IR, Somma AT, Moore B. 2016. The eye of the Barbary sheep or aoudad (Ammotragus lervia): reference values for selected ophthalmic diagnostic tests, morphologic and biometric observations. Open veterinary journal 6(2):102-113. doi.org/10.4314/ovj.v6i2.6
  15. species_v1:Standard textbook knowledge
  16. Haarlem CS, Hynes C, Jackson AL, Mitchell KJ, O'Connell RG, Healy K. 2026. Pace of ecology drives the tempo of visual perception across the animal kingdom. Nature Ecology & Evolution (doi:10.1038/s41559-026-02994-7). Figshare dataset 10.6084/m9.figshare.30556475. doi.org/10.6084/m9.figshare.30556475
  17. Healy K, McNally L, Ruxton GD, Cooper N, Jackson AL. 2013. Metabolic rate and body size are linked with perception of temporal information. Animal Behaviour 86:685-696. Table 1. doi.org/10.1016/j.anbehav.2013.06.018
  18. Inger R, Bennie J, Davies TW, Gaston KJ. 2014. Potential biological and ecological effects of flickering artificial light. PLoS ONE 9(5): e98631. Table 3. doi.org/10.1371/journal.pone.0098631

Every value cites its sources (all sources). Data: catalogue-v1, built 2026-09-29. Accuracy notes: how accurate is this?