The experienced zoo-keeper prepared the food for the elephants before sunrise.

The zoo-keepers scheduled extra enrichment activities for the elephants to reduce boredom.

The police cordoned off the park after the zoo break left several animals wandering the streets.

Her kitchen looked like feeding time at the zoo, with crumbs scattered everywhere, toys underfoot, and a dozen hungry kids clamoring for snacks.

When explaining evolution at the party, he joked that life goes from goo to you by way of the zoo, and everyone laughed.

Under the microscope, the biologist observed a zoosperm swimming toward the egg.

Under the microscope, zoosperms were observed propelling themselves toward the egg with whip-like flagella.

Under the microscope, the biologist observed several zoosporangia releasing motile spores into the culture medium.

In her doctoral thesis, she combined field observations and computational models to advance zoosemiotics.

Researchers studied zoosexuality to understand the psychological and social factors behind it.