littermate

American  

[lit-er-meyt] / ˈlɪt ərˌmeɪt /

noun

1. one of a pair or group of animals born or reared in the same litter.

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Etymology

Origin of littermate

First recorded in 1920–25; litter + mate ¹

Example Sentences

Then-Red Sox infielder Ian Kinsler also adopted a littermate.

From Seattle Times • Jun. 23, 2022

Four months later, his littermate, Jessie, was diagnosed with head and neck cancer.

From Los Angeles Times • May 20, 2022

Once a cub has been tackled by its littermates, roles might reverse such that a littermate handicaps itself, allowing the other cub to tackle it in return.

From Scientific American • Jul. 20, 2021

Whippets are incredibly fast, but Whiskey’s path includes a speed bump - littermate and sister Bourbon is a contender, too.

From Washington Times • Feb. 10, 2019

Friendly, he announced to Pax; brother but not littermate of the vixen.

From "Pax" by Sara Pennypacker