When ticks feed on the blood of an infected animal, they become a carrier and can then pass the bacteria on to the next animal the tick bites such as your cat. (cat-health-guide.org)
If fleas affect puppies, kittens or weak pets, they may cause anemia, as fleas feed on blood. (vetinfo.com)
When a mosquito feeds on the blood of an infected animal, it can easily transfer the larvae to other dogs and cats. (doylestownveterinaryhospital.com)