Cats' ears are naturally warm because their normal body temperature is higher than humans, typically between 101°F and 102.5°F, so a bit of warmth in their ears is normal. Additionally, cats regulate their body temperature by increasing blood flow to their ears, paws, and nose, especially in hot weather to release excess heat. However, if the ears are excessively warm or hot, it could indicate medical issues such as allergies, fever, ear mites, or ear infections. If the cat shows other symptoms like lethargy, loss of appetite, or unusual behavior, consulting a veterinarian is advisable.
