One is good enough.
Some cows have magnets inside their stomachs! The magnets attract any metal that the cow might accidently eat, which would harm or kill the cow if it passed through the digestive system. A cow can keep a magnet inside the stomach for it's entire life without harm.
A cow has 4 stomach cavities.
4
Cows have four stomachs
There are four (4) chambers or compartments in a cow's stomach. See the related question below for more information.
Absolutely nothing.
Go to your vet, buy a bolus-pill plunger and a pack of bolus magnets (some call them cow magnets). Restrain the cow, put the magnet pill in the plunger, open the cows' mouth, put the plunger at the back of the cows' throat, and pop the pill in. The magnet will stay in the cow's reticulum (the "hardware" stomach where bits of metal and string accumulate), picking up the nail she just ate as well as other things she ate by accident. The magnet will help keep the hardware from puncturing her stomach, causing infection and a malady known as "Hardware Disease."
Cow (it is the pig's stomach, not cow)
1 and that's a cow
A cow has one stomach with four different compartments or areas.A cow has one stomach with four different compartments or areas.
Bulls also have a four-chambered stomach. Bulls are just a male version of a cow.
Cows stomach is a smooth muscle since smooth muscle is found mostly in the walls of hollow organs.