A wattle is a fleshy caruncle hanging from various parts of the head or neck in several groups of birds and mammals. Caruncles in birds include those found on the face, wattles, dewlaps, snoods, and earlobes. Wattles are generally paired structures but may occur as a single structure when it is sometimes known as a dewlap. Wattles are frequently organs of sexual dimorphism. In some birds, caruncles are erectile tissue and may or may not have a feather covering.^[1][2]

Wattles are often such a striking morphological characteristic of animals that they feature in their common name. For example, the southern and northern cassowaries are known as the double-wattled and single-wattled cassowary, respectively, and a breed of domestic pig is known as the Red Wattle.

Mammals with wattles include:

• Some domestic goats have fleshy, fur-covered protuberances, called tassels, hanging on either side of the throat.
• Some domestic pigs, such as the Kunekune, Lithuanian Native pig, and Red Wattle have a fleshy protuberance hanging on either side of the throat.

• A common pheasant (Phasianus colchicus) with bright red facial wattles
• A southern cassowary with double wattles hanging from the throat
• A goat with small wattles at the base of its throat
• Red Wattle pig with wattles at the base of the throat

Look up wattle in Wiktionary, the free dictionary.

• Casque (anatomy)
• Crest (feathers)
• Comb (anatomy) - the fleshy structure present atop the heads of many Galliform species
• Frontal shield
• Gular pouch
• Dubbing (poultry) - wattle amputation