As well as their stress call and fighting call, they emit a Hon call (contact call between male-female pairs), Ki and Kiu calls (more excited contact calls that identify the caller), and a Kea call (a loud call shared between males in adjacent territories).
They emit a stress call whenever they are in danger, such as when predators are close or when a person steps on a log in which a frog resides.
When plants are damaged, they emit a fragrance called green leaf volatiles, or G.L.V.'s.
Some species, including oak trees, emit a compound called isoprene that is known to at least partially help them resist ozone's effects (though, paradoxically, isoprene may itself get converted to ozone in the air).
However, none of them emitted 50-kHz calls during presentation of 50-kHz calls, or 22-kHz calls, and only one animal emitted a single call during presentation of noise, meaning that calls were predominantly emitted during inter-stimulus-intervals (not shown in detail).
When lost, young tammars are known to emit a coarse screeching call and adult females may respond with a similar call.
Several species, including corn and lima beans, emit a chemical distress call when attacked by caterpillars.
"Hornets are far more difficult and dangerous to control than paper wasps," he said, explaining that when a hornet nest is disturbed, the hornets emit a scent -- called a pheromone -- that inspires other wasps in the nest to attack.
Moth balls can kill different types of bacteria in our environment, be it on the furniture, bed, mattress, sheets, blankets or even the closet.They can be placed under the sheets, mattress, or furniture for a couple of hours, and emit a poisonous gas called benzene which is believed to interfere with the Morgellon organisms.
A highly social member of the squirrel family known for burrowing elaborate tunnels and emitting a warning call similar to a dog's bark, they are treated as pests by most ranchers because they can spread rapidly and compete with cattle for grass.
