They are made of very fine wire (originally catgut) which was also used in the "snaring loop" of a small animal trap.
Reata
A lasso.
By not hunting them or threating them for their snaring. WHICH people do often!
Sonar
mouse = (animal, computer device)
Snaring the sun was one of the many feats performed by trickster demigod, Maui.
Animal tracking, is done mainly by either inserting a chip under the skin of an animal that can be electronically followed by a device, or by attaching a collar of some sort to the animal, that again, can also the followed using a similar device, hope this is what you were looking for! :)
An ornithopter is a device, whereas a bird is an animal
camoflague
A calliper is a measuring device, not an animal. It does not lay eggs.
Pepper spray is a device for distracting attackers, animal or human.