Frank J. Wilstach, comp. A Dictionary of Similes. 1916.

Jealous

Jealous as a barren wife.
—William Congreve

Jealous as a pet greyhound.
—Victor Hugo

Jealous as a Spaniard.
—Victor Hugo

Jealous as a Spanish miser.
—Charles Macklin

As jealous as a nine-day’s lover.
—Henry. C. Merivale

Jealous as a Barbary cock pigeon over his hen.
—William Shakespeare

Jealous as a cat.
—Giovanni Torriano (Italian Proverbs)

Jealous as a couple of hairdressers.
—Richard Chenevix Trench

Jealous as a Venetian.
—Voltaire