Do Horses Have Fleas?

There will always be an exception to every rule and while it’s not impossible for horses to have fleas it’s extremely rare for a healthy horse to ever have a problem with fleas. When I talk about a horse having a problem with fleas I mean a horse that is outwardly displaying signs of having them. Signs such as skin that has become raw due to being itched so much in an attempt to ease flea bites. Some horses will pick up one or two fleas in their life, but in cases like these, the fleas are probably just using the horse as a stop-off between hosts rather than as a host itself.

Horse’s generally don’t get fleas because they don’t spend a lot of time lying down. Fleas prefer hosts that live in nests or dens so that they have a warm environment to breed and plenty of ‘victims’.

How do horses get fleas?

While horses won’t suffer from fleas per se they can become a temporary host for any number of reasons. Fleas are opportunistic and can wait for many months, without eating, before finding a new host and if your horse is unlucky he could become that host.

It can be easier than you think for your horse to become a temporary host, for example, you may have recently ridden through a meadow with long grass that a fox or coyote has rolled in. The animal may have long gone but the flea eggs could have hatched and will now be waiting for a new host. They won’t stay on your horse but could (and probably would) travel from him to another four-legged furry host.

Another very common way for horses to pick up fleas is from other animals in the yard such as cats and dogs. Most of us have a cat or two to help keep the local rodent population down or have a canine security guard to deter unwanted visitors. Both of these can easily carry 20 fleas at any one time so it’s understandable that one or two of them may find their way to your horse.

Can horses get fleas from cats?

Fleas are generally host-specific which means that they will live on one species or group of species. This also means that while they can feed on other species they can’t reproduce on that species. Thankfully this makes it very unlikely that a horse will ‘suffer’ from cat fleas (or dog fleas for that matter either). That said though if the yard cat loves nothing more than to curl up on your horse’s back then it’s highly likely some of the fleas from the cat will make their way to your horse. 

If this happens don’t worry, as I say fleas are host specific so they won’t lay eggs on your horse. In most cases, you’ll be able to brush them off of your horse’s coat, either when grooming him or just with your hand. If you’d prefer you can also wash them out of your horse’s coat but if you do this make sure you dry your horse properly after.

How can you prevent a horse from getting fleas?

The best way to prevent your horse from getting any fleas at all is to get rid of the problem at the source by treating the cats and dogs (and all other animals that will come into contact with your horse) for fleas. Removing them from other animals will stop them from being able to travel to your horse in the first place.

If that’s not possible, maybe because you’re regularly traveling to other yards for competition, then don’t worry they can still be easily prevented. Making sure your horse has a well-balanced diet with a natural garlic supplement (you should never feed fresh garlic to a horse) will naturally repel any fleas (as well as flies). Grooming your horse daily will also help to keep him free of fleas. 

How do you get rid of horse fleas?

If your horse is healthy then he almost definitely won’t suffer from fleas but if he does manage to pick up fleas from the yard cat don’t worry they’ll likely fall off within a day or two. If, however, you want to get rid of the fleas straightaway then in most cases, a thorough groom followed by some fly repellent will do the trick.

If you’d prefer to use a natural alternative to fly repellent then you could always make your own. Simply boil a pint of water then, once it’s boiled, add a whole lemon (sliced, but with the rind still attached) and leave it to stand for around 10 hours. You can then either use a sponge to rub it into your horse’s coat or if you’d prefer, transfer it to a spray bottle and use it as you would any other fly repellent. The reason this natural repellent works is because the juice found in the rind of the lemon contains a chemical compound called d-limonene which is known for its insecticide capabilities, in fact, it’s often used in over the counter repellents.

Do horse fleas bite humans?

There’s no such thing as a horse flea so technically, no horse fleas can’t bite humans. If, however, your horse does have fleas then the chances are they’ve come from something like a cat or dog and they can bite humans.

While flea bites can be painful and cause itching the fleas themselves, according to the Centers for Disease Control, aren’t known to carry any disease.

Why don’t horses suffer from fleas?

Most animals with fur suffer from fleas so you might think that horses have developed or evolved a special type of coat that can help to deter the fleas but this isn’t the case. In order to understand why horses don’t suffer from fleas, you need to understand how the lifecycle of a flea works. After biting their host an adult flea will lay around 20 eggs (which they can do daily), as the host animal moves these eggs fall off around where the host lives. The eggs will then stay there for up to two weeks before developing into larvae and later into pupae before returning to their host (or finding another host) to start the cycle again. 

If your horse is stabled then surely the eggs can live in the bedding until they hatch? You might think that that would be the case but as of the time of writing this, fleas thankfully haven’t yet evolved to be able to live in straw, wood chipping or any other type of horse bedding so, therefore, haven’t developed to be able to live permanently on a horse. Also because horses don’t create nests or dens or setts the fleas don’t have a place for their eggs to survive.

What’s the difference between fleas, lice, ticks and mites?

Some people refer to lice, ticks or mites as fleas and vice versa but they’re actually very different insects. Yes they can all bite and leave the skin feeling sore and itchy and they all feed on blood but that’s where the similarities end.

Ticks (Ixodida)

Like fleas ticks, which are related to spiders, are host specific but unlike fleas, there are a couple of species of ticks that are horse specific. Their bites can not only cause the skin to be sore but in some cases can transmit diseases such as [extra href=”#lymedisease” info=”popover” info_place=”bottom” info_trigger=”hover” info_content=”A disease that its transmitted by ticks and is a form of arthritis”]Lyme disease[/extra]. In extreme cases, they can cause anemia in horses due to severe blood loss.

Mites (Parasitiformes)

Another relative of the spider, mites can infect horses and will burrow into their host. This burrowing can cause extreme itching and result in a skin condition known as mange. There are many different forms of mange depending on where the problem is on your horse, for example, ear mange and leg mange.  The mange can be extremely painful and, if effecting the horse’s leg, can even cause lamenessOpens in a new tab..

Fleas (Siphonaptera)

Fleas are wingless insects that need to eat blood in order to produce their eggs. Despite not having wings they can travel to their host by jumping, in fact, they have such an incredible jump that if they were the size of an average man (say around 6ft) they could easily jump over 670ft!

Lice (Phthiraptera)

As with fleas lice are host specific and can infect horses. These parasitic insects will live in the horse’s coat and can easily be transferred from horse to horse. If one horse has lice then he needs to be kept away from other horses and all of his brushes, rugs, halters, etc mustn’t be used on any other horse. The good news about lice though is that although they can be very uncomfortable for the infected horse (making his skin sore) they’re not known to transmit any disease.

Further reading

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