1) Cold Tail: This is a condition in which the gerbil's tail becomes cold to the touch and may appear pale or swollen. It is often caused by constriction of the blood vessels in the tail, which prevents warm blood from reaching it. Cold tail can also lead to tail injuries, self-mutilation, and even death in gerbils. It can be caused by low husbandry temperatures, wet cage conditions, overcrowding, fighting among litter mates, diarrhea from bacterial or parasitic causes, and any systemic illness that causes the gerbil to go into shock. Cold tail is a veterinary emergency, and gerbils should be seen by a vet immediately if they show signs of this condition.
2) Ear Infection: Ear infections are common in gerbils and can be caused by a variety of factors, including bacteria, yeast, and parasites such as mites. Signs of an ear infection can include head shaking, ear scratching, crusty or swollen ears, and reduced balance or coordination.
3) Respiratory Infection: Respiratory infections are also common in gerbils and can be caused by bacteria or viruses. Signs of a respiratory infection can include sneezing, coughing, nasal discharge, and difficulty breathing.
4) Seizures: Seizures can be caused by a variety of medical conditions, including head injuries, brain tumors, metabolic disorders, and poisoning. Signs of a seizure can include shaking or shuddering, loss of consciousness, and uncontrolled muscle movements.
5) Stress: Stress can also cause a gerbil to shake or shudder. Signs of stress can include decreased activity, hiding, changes in appetite, and self-mutilation.
Consult a Vet
If your gerbil is shaking or shuddering, it is important to take it to a vet for diagnosis and treatment. The vet will be able to determine the cause of the shaking or shuddering and recommend the appropriate treatment.