Correct spelling, explanation: the word sheep is used in both singular and plural form – there is no distinction in this case, so we have to infer the meaning from the context. This is one of the exceptions in English where the singular is not structured differently from the plural. We can say one sheep or twenty sheep. You won’t find the form sheeps in any dictionary, which is important to remember.

Definition of sheep:
noun, plural, more than one farm animal with thick wool that eats grass and is kept for its wool, skin, and meat
When I go to the countryside to visit my grandparents, I like to watch the sheep.
My dad is a sheep farmer.

Proverbs with sheep:
Some most commonly used proverbs include:
Being the black sheep of the family, meaning: being a disreputable member of the family.
Separate the sheep from the goats, meaning: to recognize the difference between people who are good at something and those who are not.

Incorrect spelling, explanation: most English plural nouns are formed by adding the -s or -es suffix to the word base, but some plural nouns are the same as singular nouns when it comes to spelling. We must keep these exceptions in mind so as not to make a mistake. One of them is the word sheep. There is no sheeps and it’s a common error. It’s easy to get confused because most plural nouns are different from singular nouns. Remember that sheep is the only correct form.