When it is dark, we strain our eyes to see better. Reindeer, though, simply change the colour of their eyes!
Noticed how when some adults talk to babies, it usually sounds like they're speaking gibberish? There is actually a word for it-motherese.
Walking on sand is more difficult than walking on firm ground as our feet keep sinking into the sand, thus slowing down our pace. The jerboa has no such problem.
When we have eaten too much or when our tummy doesn’t feel good, we sometimes need to take digestive pills to aid digestion.