Unfortunately, without more information, it's impossible to say for certain why your rabbits died. There are many possible reasons, some more common than others:
Potential Causes:
* Infectious diseases: Rabbits are susceptible to a variety of diseases, some of which can be highly contagious. They may have been exposed to something at the pet store or during transport. Common culprits include:
* Pasteurellosis: This bacterial infection can cause respiratory problems, abscesses, and even sudden death.
* Rabbit hemorrhagic disease (RHD): A highly contagious viral disease, often fatal.
* Myxomatosis: Another viral disease, causing swelling around the face and eyes.
* Parasites: Internal or external parasites can weaken rabbits, making them more susceptible to illness.
* Stress: Moving to a new home can be incredibly stressful for rabbits, and stress can suppress their immune systems, making them more vulnerable to disease.
* Poor nutrition: If the rabbits were not eating properly at the pet store, they may have been malnourished, making them weaker.
* Underlying health conditions: Rabbits can have pre-existing health conditions that may not be immediately apparent.
* Accidental injury: While unlikely, it's possible the rabbits were accidentally injured during transport or in their new home.
What You Can Do:
* Consult a veterinarian: It's essential to take any surviving rabbits to a veterinarian familiar with rabbits. They can perform a necropsy (animal autopsy) on the deceased rabbits to determine the cause of death.
* Be aware of symptoms: Watch your surviving rabbits closely for any signs of illness, such as:
* Lethargy
* Loss of appetite
* Diarrhea
* Sneezing
* Nasal discharge
* Weight loss
* Difficulty breathing
* Shaking
* Isolate new rabbits: When you bring new rabbits home, keep them separate from your other pets for at least 30 days to prevent the spread of disease.
Preventing Future Loss:
* Source your rabbits carefully: Research breeders or reputable rescue organizations that prioritize the health of their rabbits.
* Ask about health records: Find out if the rabbits have been vaccinated and if they have a history of illness.
* Provide proper care: Ensure your rabbits have a clean and spacious environment, a balanced diet, and access to fresh water.
It's important to remember that rabbit illness can be difficult to detect, and sometimes death can occur quickly. While losing your rabbits is a painful experience, seeking professional help can help you understand the situation and potentially save your other pets.