Here's why:
* Predatory Instinct: Dogs are predators, and hamsters are prey animals. Even a well-trained dog may have a strong instinct to chase, herd, or even harm a hamster.
* Size Difference: Hamsters are incredibly delicate and small. A dog's lick, even if well-intentioned, could seriously injure a hamster.
* Stress: The hamster will be extremely stressed by the dog's presence and licking. This can lead to health problems for the hamster.
What you should do:
* Separate the animals: Never leave a dog and a hamster unsupervised. Keep them in separate cages and areas of your home.
* Supervise interactions: If you do want to let your dog and hamster interact, do so only under strict supervision and for very brief periods.
* Train your dog: Teach your dog a "leave it" or "drop it" command. This will help you control your dog's behavior around small animals.
Remember: The safety of your hamster is paramount. Take all necessary precautions to ensure their well-being.