* Mammary gland develops in the last week of pregnancy.
* Mammary gland develops in the last week of pregnancy.
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* Suckling is stimulated by a pheromone produced by a gland near the nipple.
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* Suckling is stimulated by a [[Reproductive_Behaviour_-_Attractivity_Behaviour_-_Anatomy_%26_Physiology#Pheromones|pheromone]] produced by a gland near the nipple.
* Consumption of water and caecotrophs increases 10-fold during lactation.
* Consumption of water and caecotrophs increases 10-fold during lactation.