Why a mother degu "talks" to her pups: an early auditory learning process
A newborn degu doesn't instinctively recognize its mother's call: it has to learn it, during its very first weeks of life. Find our health benchmarks in the care and grooming section.
A learned response, not an innate reflex
Poeggel and Braun published a study on early auditory filial learning in degus in the journal Brain Research in 1996 (research on Google Scholar). Mother degus emit a specific call during nursing that stimulates and reinforces suckling in the pups. The authors surgically muted some mothers and found that their pups gained significantly less weight than those raised by normally vocalizing mothers. At two weeks of age, only pups raised by a vocalizing mother showed a clear preference for the maternal call in a discrimination test, indicating that this recognition is learned during the first two weeks rather than present from birth.
What this means in practice for a litter
This finding highlights the importance of a calm, stable environment around the mother and her pups during this early window: repeated disturbance, noise stress, or prolonged separation from the mother during the first two weeks can disrupt this still-fragile auditory learning, with a measurable effect on pup weight gain.
- Limit handling of the litter during the first two weeks, to the strict minimum needed to check on general condition.
- Place the cage in a quiet spot, away from sudden noise and frequent foot traffic, for the duration of this sensitive period.
- Let the mother nurse undisturbed rather than regularly separating the litter to observe it closely.
This sensitive period leads directly into weaning: our general guide on weaning baby rodents covers the following steps through to full independence. It also connects to what's already known about the species' social life: our article on communal nesting in degus covers how several related females can raise their litters together.
Frequently asked questions
Does a slow-growing degu pup necessarily have a health problem?
Not always: a too noisy or disrupted environment during the first two weeks can also explain slower weight gain, without any underlying illness.
Should all noise around the cage be avoided during this period?
It's not about total silence, but about avoiding sudden, repeated noise that could mask or disrupt the calls exchanged between the mother and her pups.
Does this mechanism apply to other pet rodents?
Vocal mother-pup communication exists in several rodent species, but this specific auditory learning protocol has been documented specifically in degus. Find all our guides on the rodent hub.
This guide is part of Planète Pets’s Rodents universe. Our advice is general in nature: for any health concern, your veterinarian remains the only reference.