Hi! Today I would like to share some idioms with sheep with you , all of them very interesting and quite useful, I recommend you to remember some of them, so read on and enjoy)

Black sheep of the family- 

 the worst or the most unpopular or disliked member of a family

Exp: My cousin is the black sheep of the family and nobody likes to talk about him. 

Separate the sheep from the goats-

to divide people into two groups

Exp: had to separate the sheep from the goats when we began to make selections for the school choir. 

Wolf in sheep's clothing

dangerous person pretending to be harmless.

Exp: Carla thought the handsome stranger was gentle and kind, but Susan suspected he was a wolf in sheep's clothing. 
Exp 2: Mimi: Why shouldn't I go out with David? He's the nicest man I've ever met. 
Alan: He's a wolf in sheep's clothing, Mimi. Can't you tell?

Make sheep's eyes at somebody   (old-fashioned)

to look at someone in a way that shows that you love them or are attracted to them 

Exp: Ken's been making sheep's eyes at his ex-girlfriend all night.

Cast sheep's eyes at:

If you cast sheep's eyes at someone you look lovingly or with longingly at them(it also slang meaning to loook someone disturbingly)

Exp: Old woman was casting sheep's eye at her son after so many years.

To count sheep: 
to imagine sheep jumping over a fence.

Exp: It was one of the painful nights after her mother's leaving; little girl wasn't able to sleep despite her aunt's advice to count sheep.

To get a sheepskin:

getting a degree or diploma.

Exp: Her mother said:''when you get a sheepskin you can do whatever you want, but you are a student and you must do what I say''

To leave wolves in charge of the sheep:

it has same meaning such proverbs as ''he that is afraid of leaves must not go in wood,who makes himself a sheep will be eaten by the wolves''.that means we shouln't complain when we make mistakes deliberately.

Exp: you should't leave wolves in charge of sheep now, because you gave the all money that boy on your own.I think you knew he would steal it.

Scabby sheep:

it has the same meaning with the idiom 'black sheep'. that is, the unpopular member of a group.

Exp: who is the scabby sheep of the family?

Sheepish

1. abashed or embarrassed, espesially through looking foolish or being in the wrong
2. resembling a sheep in timidity or lack of initiative