A southern-African subspecies of plains zebra, Equus quagga quagga, which went extinct in 1883. The upper parts of the animal were reddish brown, becoming paler behind and beneath, while the face, neck, and fore part of the body were marked by dark stripes.

plural of quagga

A mussel, Dreissena rostriformis, originally from Ukraine but present as an invasive species in the United States.

plural of quagga mussel