Atrazine is a chemical compound widely used as an herbicide in commercial crops and home lawn care. It is part of the triazine group of herbicides, the most widely used group of herbicides. We carry several weed killers you can buy that contain Atrazine to help you control a wide range of broadleaf and grassy weeds.
For the plant species, see Cat's ear. Thirty-two individual muscles in each ear allow for a manner of directional hearing; a cat can move each ear independently of the other. Because of this mobility, a cat can move its body in one direction and point its ears in another direction. Most cats have straight ears pointing upward. Unlike dogs, flap-eared breeds are extremely rare (Scottish Folds are one such exceptional mutation).
Ear Wiggling and Evolution. Ear wiggling happens through muscles above and behind your ears called auriculars. In some animals, these muscles are useful because ear movement is helpful. A cat, for example, can move its ears to help it listen for tasty birds. But why would humans have these muscles? Way back when, humans and cats had the same ancestors. Ear wiggling was useful to this shared ancestor. Now, humans and cats have become very different.