New research reveals how different animals see the world
https://www.earth.com/news/animals-vision-see-world/Visual Acuity and the Evolution of Signals
https://www.cell.com/trends/ecology-evolution/fulltext/S0169-5347(18)30052-1AcuityView: An r package for portraying the effects of visual acuity on scenes observed by an animal
https://besjournals.onlinelibrary.wiley.com/doi/full/10.1111/2041-210X.12911A household scene as viewed by various pets and pests. Human eyesight is roughly seven times sharper than a cat, 40 to 60 times sharper than a rat or a goldfish, and hundreds of times sharper than a fly or a mosquito. (Eleanor Caves)
Acuity varies by at least four orders of magnitude across animals with image-forming eyes. Figure from Caves et al. 2018, Trends in Ecology and Evolution (Yes, that's an eagle at the top of the scale!)
Visual acuity in 16 species of vertebrates and invertebrates. Units are cycles per degree (the number of black/white stripe pairs that can be discriminated within one degree of visual angle).