What is the term for rat birth? - briefly
The birth of a rat is termed parturition, and the offspring are called pups.
What is the term for rat birth? - in detail
The process by which a female rat delivers offspring is called «farrowing». The newborn individuals are referred to as «pups», and the collection of pups born at one time constitutes a «litter».
Gestation in rats lasts approximately 21‑23 days. A typical litter contains 6‑12 pups, though numbers can vary with strain, age, and nutrition of the dam.
Key characteristics of the birth event:
- The dam isolates herself in a nest before delivery.
- Contractions begin, leading to the expulsion of each pup, usually one at a time.
- Pups are altricial: born hairless, blind, and dependent on the mother for warmth and nourishment.
- The mother cleans each pup, stimulates breathing, and initiates nursing within minutes of birth.
Post‑natal development follows a predictable timeline:
- Days 1‑3: Pups remain with the dam, gaining weight and developing thermoregulation.
- Days 4‑7: Eyes open, fur begins to appear, and locomotor activity increases.
- Days 10‑14: Weaning occurs; pups start consuming solid food while still nursing.
- Day 21: Sexual maturity is approached, marking the end of the juvenile phase.
Understanding the terminology and biological details of rat parturition supports accurate communication in research, veterinary practice, and animal husbandry.