What is a small rat called? - briefly
A young rat is called a «rat pup». The term «juvenile» is also used for rats that have not yet reached adulthood.
What is a small rat called? - in detail
A juvenile rat is commonly referred to as a «pup». In laboratory and breeding literature the term «kit» also appears, though it is less frequent. Both designations denote an individual that has not yet reached sexual maturity, typically under four weeks of age.
Rats are born hairless, blind, and weighing approximately 5–7 g. Within the first week they develop a fine coat and begin to open their eyes. By the third week they exhibit exploratory behavior and start to wean from maternal milk. The transition from «pup» to adult is marked by the onset of reproductive capability, generally around six weeks.
Synonyms used across various fields include:
- «pup» – primary term in scientific papers and pet‑care guides.
- «kit» – occasional usage in breeding circles.
- «juvenile» – generic descriptor in zoological classifications.
- «subadult» – applied when the animal approaches but has not yet attained full maturity.
In the pet trade, the label «pup» appears on cages and marketing materials to indicate a young animal suitable for novice owners. In research facilities, identification tags often read «pup» to differentiate experimental subjects by developmental stage, ensuring appropriate dosing and handling protocols.
Understanding the specific terminology aids communication among veterinarians, breeders, and researchers, eliminating ambiguity when describing the early life stage of the species.