Smell and Taste

Boots sniffing out a piece of apple on a tarp.

Horses need strong senses of smell and taste. Safe grazing requires horses to be constantly aware of poisonous plants.  Horses are adept at picking the best forage out of a pasture. Unless they are starving, they stay well clear of plants like buttercup and ragwort.

By sniffing a horse dropping, a horse can identify its owner.  In the wild, horse droppings mark home ranges and leave a clear message to other horses about who lives there.

When we bring out a tube of worming paste, our horse knows what it is. Vets have a distinctive smell. Since every horse, dog and person has a distinctive smell, horses recognize us or old friends after long absences.

They similarly recognize individuals they don’t like. In the wild, horses identify each predator by its distinctive smell.

If we toss a treat onto the ground, the horse must sniff it out because it will be in his visual blind spot. On our morning walks, my mare often busies herself sniffing things on the road surface. Some people teach their horses to track a scent trail.

This is a cookie ball with holes in it. It twists open to put in pellets which fall out as the horse rolls the ball along. It took her a few seconds to work it out.

To ensure safe grazing, taste is well developed. To some extent, horses can ‘spit out’ something they don’t like, but not as well as dogs or people. They are not able to vomit.

Sometimes horses are reluctant to drink water that tastes different to the water at home, so people teach them to drink water with a bit of apple cider vinegar or molasses added (before they leave home).

Horses are also very astute about knowing when their regular feed has been doctored with medications. I have to hide medicine in jam sandwiches for Boots, after first giving her undoctored jam sandwhiches for a while.

Horses can develop a lively set of acquired tastes. My mare loves tomatoes, celery, parsley, peaches (when she had access to a peach tree, she learned to elegantly spit out the stones), feijoa, mandarins, bananas, and plucks the odd lemon off the tree as she walks past but then decides it is not to her taste.

She is less keen on cucumber, cabbage, lettuce or spinach. My friend’s horse, Smoky, did not have such a refined palate and would distastefully drop anything unusual out of his mouth. By watching my mare enjoy tomatoes, he eventually tried one and decided he liked them too.

Touch

Whisker Touch

Whiskers are an important ‘early warning system’ to protect a horse’s eyes, nose and muzzle. Grazing in the dark or in tall grass requires a sensitivity that functions with touch.

Each whisker has its own nerve pathway connecting directly to the brain. There may only be two long and several short whiskers around each eye, but they are enough to keep the eyes safe in most circumstances.

It is therefore sad to see ‘show horses’ with whiskers cut or shaved off. Because people don’t have comparable ‘touch sensitivity’ organs they incorrectly presume that a horse does not need his whiskers.

My horse uses her muzzle whiskers to check if an electric fence is on or off.

Nose Touch

When a horse investigates something new, his first act is often to carefully put his whiskers on it, then his whole nose. The mobile part of the horse’s nose and upper lip have touch sensitivity similar to that of human fingers.

We followed the bike, being walked away, at a distance which Boots found safe. Eventually she was willing to come closer until she had the courage to sniff the stopped bike.

Foot Touch and Foot Awareness

Horses know that if their feet are compromised, they are an easy meal for the first predator that comes along. Unshod feet, working in the way evolution intended, feel the nature of the ground, helping the horse adjust his balance moment to moment.

A horse asked to step onto an unusual surface will often sniff it first, then paw with a foot to gain more information about the nature of the surface. When we introduce a new surface, it is helpful for the horse if we let him paw away until his curiosity is fully satisfied.

When I introduced my horse, Boots, to a tarp for the first time, she pawed it into a scrunched-up ball.  She did this the first five times I brought out the tarp. After that, she was comfortable walking across it or standing on it.

Above: Mat targeting (front feet and hind feet) and pedestal targeting all help to make the horse more aware of where his feet are. Placing the feet accurately helps to build proprioception – knowing where the limbs are and how to place them with precision.

Below: Boots became adept at lining all four feet up on her balance beam.

Walking across rails and hoops with click&treat for a clean passage aids proprioception. Start with one rail or hoop, and when that is stepped across cleanly 90% of the time, add a second, and so on.

Horses are very careful about where they put their feet because they depend entirely on being able to move to stay safe from predators. There are numerous ways to help a horse build foot awareness and confidence with new surfaces.

For this task we started with organising the front feet either side of the rail. When that was solid, we added the back feet.