No.
No.
Manatees and dugongs are sea cows. They're called cows because they're similar to cows, as they chew their food for eight hours a day.
no
24hours
No. They chew partly digested forage (like grass, hay and silage), not "spit."
When cattleappear to be chewing they are doing exactly that, although I think you are referring to when cattle are chewing their "cud". Cattle regurgitate a small portion of food, known as their cud, and chew on it.
the resolution take a day or 24hours that is what cause day and night
Cows chew the cud, which is a partly digested bolus of plant material she had swallowed whole earlier.
Cows don't chew cheese. They're herbivores, they chew grass and hay and such, and chew, when they're sitting around and relaxed, partly digested forage matter that they regurgitated from their reticulo-rumen tract called cud. Milk is produced from cows (normally for their calves, but in the case of dairy cows, for human consumption), and the fatty content of milk is made into cheese and other creamy dairy products like ice cream, yogurt, and butter.
They can keep you in it for 24hours a day if they wanted to.
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northern norway