littermate

[ lit-er-meyt ]

noun

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

Word History and Origins

Origin of littermate¹

First recorded in 1920–25; litter + mate ¹

Example Sentences

Meanwhile, 44 retriever puppies stayed with their moms and littermates until they were eight weeks old.

From Science News For Students

Instead, they spent most of their time with their fellow littermates and birth mother.

From Popular-Science

Meanwhile, 44 retriever puppies stayed with their mothers and littermates until they were 8 weeks old, with only brief visits from people.

From Science News

The average age was around eight and a half weeks, which is still in the middle of blissful puppydom—the age where they have primarily spent their time with their littermates and have had limited exposure to humans.

From Popular-Science