Fleas and Ticks: Fleas can bother a Cavalier King Charles Spaniel (dog) dreadfully, so adequate flea prevention is essential, especially in the warmer months. Ticks can pass on diseases such as Lyme disease, so if you live in an area with ticks (most of the country now), do frequent tick checks all over your Cavalier King Charles Spaniel's (dog's) body--especially for Cavalier puppies, whose immune systems are not yet developed.
