Ewe in Wikipedia
Ewe. - In Hebrew, six names at least, with their feminines, express the different stages of development of the sheep. Its domestication goes back to the night of time, so that the early traditions enshrined in the Bible speak of the first men as shepherds. Whatever may be thought of this point, it is out of question that from the dawn of historical times down to our own, flocks have constituted the staple of the riches of the land. The ewe of Israel is generally the ovis laticaudata, the habits of which, resembling those of all other species of sheep, are too well known to be here dwelt upon. Let it suffice to notice that scores of allusions are made in the Holy Books to these habits as well as to the different details of the pastoral life.
Flock in Wikipedia
Flock. - The flocks of Israel include generally both sheep and goats: "The sheep eat only the fine herbage, whereas the goats browse on what the sheep refuse. They pasture and travel together in parallel columns, but seldom intermingle more closely, and at night they always classify themselves. The goats are for the most part black, the sheep white, dappled or piebald, forming a very marked contrast..." (Tristram). The shepherd usually leads the flock, calling the sheep by their names from time to time; in his footsteps follows an old he-goat, whose stately bearing affords to the natives matter for several comparisons; the Arabs, indeed to this day, call a man of stately mien a "he-goat". The shepherd at sunset waters his flock, folds them ordinarily in some of the many caves found on every hillside, and with trained dogs guards them at night.
Lamb in Wikipedia
Lamb. - The Paschal Lamb was both a commemoration of the deliverance from the bondage in Egypt, and a prophetic figure of the Son of God sacrificed to free His people from their slavery to sin and death. See EWE. (sup.).