Aggression between gerbils

Gerbils are generally more active during twilight hours.

Nest-Building

Thumping is an alert call to inform the colony of danger.

Barbering is a type of over-grooming with many causes.

A declan is when a bonded pair of gerbils need to be separated due to an attack.

Nibbling

Gerbils bite out of fear or pain.

Biting

Please see Declanning

Nipping is a pinch that doesn't break the skin