While it varies by region of the country, it's true that dogs and cats are generally more likely to come
into contact with
fleas,
ticks and
mosquitoes (which can transmit
heartworms)
during the warmer months. But most veterinarians recommend giving your pet parasite
preventive medication
year-round because it's difficult to predict when parasite season will
be and fleas and some ticks can lurk in your home all year
long — even in the winter. What's more, some
intestinal parasites, like
roundworms, can infect your animal at any time of the year.
Indoor cats aren't off the hook either — they need to be protected from parasites year-round,
too. Talk to your veterinarian about the parasite prevention products that will
work best for your dog or cat.