What is another name for daytime animals?

The most common term for daytime animals is diurnal.

Here are some other terms that might be used, but are less common:

* Day-active

* Photoperiodic (specifically referring to animals whose activity is influenced by light)

It's important to note that these terms are not perfect synonyms. "Diurnal" is the most accurate and widely used term for animals that are active during the day.