This could be done using cages.

We've loaded the engine with electric charge using cages called Penning traps-electromagnetic fields.

The Oregon wildlife department was using humane cages to try to capture straying wolves and relocate them.

Adult males are rarely observed, however, although specimens may be lured using cages containing virgin females.

This was done instead of using cages with bars, so the animals would feel more at home.

Foreign Ministry officials said they had advised the police not to use cages this time, for symbolic reasons.

In farms using cages for egg production, there are more birds per unit area; this allows for greater productivity and lower food costs.

He created these bonsais by using wires, pulleys, cages, and various other tools to make them appear tortured.

He said that techniques using racks and cages could work in waters now barren of shellfish.

According to recent surveys, it is thought that 30% of European farms still use unenriched cages.