How we use these photographs
Two of the images are in the public domain, released by United States federal agencies whose work is not under copyright. No attribution is legally required for those, and we credit the photographer and the agency anyway. The rest carry Creative Commons Attribution-ShareAlike licences, which do require attribution, so each one names its photographer beside the photograph and again below.
Share-alike licences also govern derivative works. That is why we publish these as photographs rather than cutting them up into labelled comparison graphics: a cropped and annotated version arguably inherits the licence. The labelled anatomy diagram is drawn by us instead, which keeps the photographers' work intact and leaves the diagram free for anyone to reuse.
No image on this site is machine-generated. On a page whose whole job is telling two animals apart, an invented animal would be a factual error, and image models get horn curvature, hump placement and beard shape wrong. Every photograph here was licence-checked against the Wikimedia Commons file record and looked at by eye before it was used.
The photographs









Summary table
| Animal | Photographer | Licence | Source file |
|---|---|---|---|
| American bison Bison bison | Jim Peaco US National Park Service | Public domain | Commons file page |
| American bison Bison bison | Jim Peaco US National Park Service | Public domain | Commons file page |
| American bison Bison bison | Rich Keen / DPRA USFWS Mountain-Prairie | Public domain | Commons file page |
| Cape buffalo Syncerus caffer | Bernard DUPONT | CC BY-SA 2.0 | Commons file page |
| Cape buffalo Syncerus caffer | Bernard DUPONT | CC BY-SA 2.0 | Commons file page |
| European bison, or wisent Bison bonasus | Michael Gäbler | CC BY-SA 3.0 | Commons file page |
| Water buffalo Bubalus bubalis | Yann Forget | CC BY-SA 4.0 | Commons file page |
| Water buffalo Bubalus bubalis | Basile Morin | CC BY-SA 4.0 | Commons file page |
| Yak Bos grunniens | Rufus46 | CC BY-SA 3.0 | Commons file page |
Our own work
The side-by-side anatomy diagram on the identification guide and the range sketches on the range maps page were drawn for this site. No licence is attached to them. If they are useful to you, take them and link back.
Corrections
If you took one of these photographs and want the credit worded differently, or want it taken down, write to questions@bisonvsbuffalo.com and we will fix it. The same address works for anything else on the site that looks wrong; the etymology page carries a correction a reader sent us.