All About Fleas

What are fleas?

A flea is a small wingless insect that is known for its exceptional jumping ability; it can jump up to 1,000 times its own height. The “cat” flea, Ctenocephalides felis, is the most common flea species on both cats and dogs in most areas of the world. Adult fleas live permanently on the skin and feed on the blood of dogs and cats.

So fleas can make life miserable for my pet?

Absolutely. Heavy infestations can cause severe anaemia in young puppies or kittens. Fleas bite an average of 10 times per day and can suck up to 15 times their own body weight in blood. Flea bites also cause skin irritation followed by excessive grooming by your pet that may result in skin damage and dermatitis.

Do they develop allergies from flea bites?

Yes, some dogs and cats become allergic to components of flea saliva and develop Flea Allergy Dermatitis (FAD). This may cause marked hair loss on the abdomen, back of the thighs, flanks and tail due to excessive grooming and licking.

What other complications result from flea infestations?

Fleas are responsible for the transmission of tapeworm (Dipylidium) and other infectious disease agents.

Is the flea life cycle really that important to control? Isn’t it simply good enough to take care of adult fleas?

Yes! Fleas have a very high reproductive potential: females may lay up to 50 eggs per day for more than 100 days. Flea eggs drop off the pet’s coat and then hatch releasing larvae which crawl into carpets, under furniture and even into cracks between floorboards. They feed on flea faeces, seen as black ‘dirt’ on your pets coat. The larvae then form pupae inside which they transform into young adult fleas. Well sheltered, they can survive here for many months (Under the right conditions, up to a YEAR!).
Stimuli for adult fleas to break out of the pupal casing are produced when a potential host (dog, cat or human) is in the vicinity. The average length of the flea life cycle (Ctenocephalides felis) is from 3 to 5 weeks under optimal conditions (warm and humid) but it may be much longer under cold, dry conditions. Young fleas protected in pupae may survive for 6 months or more.

What should I treat my pets with?

There are a number of different products available; some are ‘spot-on’ applications, some are sprays and some are in tasty tablet form. At Alphen Vet we are able to advise you based on the number of pets, behaviour of your animals (e.g. dogs that like to swim may benefit from a chewable tablet that can’t be washed off) and other factors to find the best solution for you. In heavy infestations, particularly where fleas are also biting humans, an environmental treatment may be advisable. These frequently contain insecticides in combination with insect growth regulators, to inhibit egg hatching and larval development.