What is a birth sac?

A birth sac refers to the protective covering that surrounds a newborn cavy, commonly known as a guinea pig. This sac is essential during the birthing process, as its function is to safeguard the developing infant and ensure a smoother transition into the external environment. The birth sac provides warmth and a moist environment, which are crucial for the newborn's immediate postnatal health. As the newborn cavy emerges, the birth sac typically ruptures, allowing the baby to begin breathing air and adapting to life outside the womb. This protective covering is a vital aspect of the birthing process, helping to ensure the survival and well-being of the newborn.

The other options do not accurately describe the term "birth sac." Bedding material refers to the substances used to line a cage for comfort and cleanliness, health supplements are products given to enhance the health of pregnant sows, and identification tags are used for tracking or identifying animals but are not directly related to the birth process.