There are many possible reasons why a Bichon's legs might shake, ranging from harmless to serious. Some potential causes include:
* Excitement or anxiety: Bichons are known for their playful personalities, and shaking can be a sign of excitement.
* Cold: Dogs can get cold, especially small breeds like Bichons.
* Muscle tremors: These can be caused by various conditions, including neurological problems, low blood sugar, or even stress.
* Pain or injury: Leg shaking could be a sign of pain in the joints or muscles.
* Underlying medical conditions: Certain medical conditions, such as neurological disorders or infections, can cause leg tremors.
It's crucial to take your Bichon to the vet for a proper diagnosis and treatment plan. They will be able to examine your dog, run tests, and determine the underlying cause of the leg shaking.