Animal Heartbeats

Animal Heartbeats turns comparative zoology into a compact tempo lesson, placing very different creatures on the same pulsing scale. The contrast is immediate, but the fastest animations carry a serious flashing hazard.

What is Animal Heartbeats?

The premise is wonderfully small: take a familiar vital sign and let the animal kingdom stretch it in both directions. Slow-beating giants establish the calm end of the scale, while smaller, faster creatures turn the same pulse into a visual sprint. It is the sort of web experiment that makes a biological comparison click before a paragraph of explanation has found its shoes. The brisk format suits a short curiosity break, provided rapid flashing is safe for you.

What you can do there

• Compare heartbeat speeds across animal species

Why we picked it

A list of heart rates could feel like homework; this page turns the contrast itself into the lesson. The shared rhythm makes biological scale tangible, and the idea fits neatly inside Neal Agarwal's tradition of playful, single-purpose web experiments.

How to get the most from it

Begin with the slower animals and scroll through the changing pace. If repeated flashes are uncomfortable or risky, stop before the hamster and hummingbird entries rather than pushing into the fastest examples.

Good to know

This page uses repeated flashing to represent fast heart rates. Accessibility guidance from OCALI says the hamster and hummingbird animations exceed three flashes per second and may affect people with photosensitive epilepsy.

Who made it, and when?

Neal Agarwal is the credited creator or organization.