Unit 3 Flashcards
What are horses used for?
work, performance, and recreation
Understanding how horses perceive and react to the world around them allows us to better _____, _____, and _____ them.
appreciate, train, and manage
Why is studying the horse’s behavior important?
- Can learn a better understanding of the horse’s nature we can learn how to work more safely and more effectively with horses
- Through a more thorough understanding of how the horse evolved we will have an enhanced understanding of how to manage horses
What is behavior?
the manner in which an animal reacts to stimuli
What is a horse’s behavior a product of?
It’s biology (“nature”) and its environment (“nurture”), and includes actions in response to internal and external stimuli
What is equine ethology?
the scientific study of the way horses act (behave)
What differences of the horse brain compared to humans reflect some of the behavioral differences between the species?
the proportionally large cerebellum in the equine brain indicates the importance of sensory integration, body awareness, balance, movement, and coordination
The structure of the brain suggests that the horse evolved to ______________________
act and then think
The horse evolved primarily as a __________
plains dweller
Due to the plentiful, but fairly low-quality forage available on the plains, the horse evolved to be a __________
grazer, eating small amounts of feed in a nearly continuous manner
Is the horse a prey or predator animal?
prey
What predatory animals are horses prey for?
large cats and wolves
The horse has developed a very strong what because of being a prey animal?
flight response
Where did the donkey likely evolve?
mountainous terrain
What will a donkey do differently than a horse?
donkeys will typically evaluate a situation more thoroughly before deciding to flee
What are the horse’s 5 senses?
- Vision
- Audition - hearing
- Olfaction - smell
- Gustation - taste
- Tactician - touch
What is the horse’s eye like size compared to land mammals?
is among the largest of all land mammals
Where is the eye placed on a horse’s head?
side of the head
What shape is the horse’s pupil?
more horizontal shape
What happens due to the combination of the horse’s eye placement and pupil shape?
makes the horse excellent at detecting movement
Does the horse have a small or large range of peripheral vision?
large
Monocular vision
allows the horse to see separate images out of each eye making them able to see movements on each side of their body
Binocular vision
allows the horse to see an object more clearly
What does monocular vision allow the horse to see?
allows the horse to see nearly all around his body
Without turning its head a horse cannot see where?
- directly in front of his face
- under head and neck
- under belly
- directly behind tail
What does binocular vision allow horse to do?
focus on an object in the distance and then investigate it close up
A horses field of vision will change according to its __________?
head position
Horses will utilize their depth perception to rate the __________ as in show jumping?
distance of obstacles
Do horses have color vision?
yes
How many types of cones do horses have in their eye?
2
what does the amount of cones a horse has result in?
dichromatic color vision
The horse’s ability to see in low light is due to the structure in the eye called the __________?
tapetum lucidum
What does the tapetum lucidum structure cause?
eyeshine, when light is, shines at the horse in the dark or iridescent eye appearance noticeable in photographs
Can horses see better in the dark than humans?
yes
The horse’s eye does not adjust to sudden changes in what?
lighting
How many degrees can a horse’s ears rotate (approximately)?
180 degrees
Where do a horse’s ears point?
toward the source of the sound to pick up more information
The eyes and ears typically are working together, and the direction of the ear can tell you where your horse is __________?
paying attention
What are the 3 primary functions of audition?
- detect sounds
- determine the location of the sound
- provide information to recognize the identity of those sounds
Can horses hear a wider range of frequencies and tend to react to sounds that humans may not perceive?
yes
Comparative studies have shown what about horses’ hearing?
that horses have more acute hearing at higher frequency than humans, and that humans tend to hear better at low and mid-frequency range.
What is the lowest frequency horses can hear at 60 dB?
What is the highest frequency horses can hear at 60 dB?
55
33.5
What do horses use their sense of smell for?
to familiarize with novel objects, surroundings, other horses, and people
What is the first thing you should do when acquainting yourself to a horse?
let them smell you
What enables the horse’s nostril to open for entry of odor molecules and intake of air when investigating?
size, shape, flexibility, and muscling of the nostril
What is olfaction important for?
- location of food
- ensuring food and water are of acceptable quality
- identification of other horses, people, and objects
- alerting the horse to predators
- identification of marked territories of other horses
- initiating reproductive behaviors
What allows the horse to detect odors?
chemoreceptors in the mucous membranes of the nasal passage
As odorous molecules enter the passageway, they bind with chemoreceptors sending signals to the _________ via the __________.
brain ; olfactory nerve
Where does interpretation of the odor then take place?
the brain
What is an accessory organ the horse has that helps them smell?
the Vomeronasal Organ (VNO)
Where is the VNO located? What is it used for?
located inside the horse’s nose and is used to detect pheromones and other substances
What do horse’s do using the VNO?
Flehmen Response
What do horses do when they display the flehmen response?
a horse will curl his lip ip and lift his head back
When is the flehmen response behavior observed?
observed in stallions when they are investigating mare’s urine to differentiate estrus mares from diestrus mares
What is the flehmen response thought to do?
intensify smells
What is the flehmen response most commonly seen in?
stallions and geldings
What sense is very well developed in a horse
sense of touch
How refined is a horse’s sense of touch?
a horse is able to detect the presence of an insect on its coat
What are the most sensitive areas in a horse?
- ears
- eyes
- nose
- flank (sides)
- legs
When is the sense of touch of great importance?
during training and riding
Why is the sense of touch of great importance during training and riding?
This sensitivity helps the horse feel and response to subtle cues, including shifts in rider weight and very slight application of pressure from the aids
Most horses learn to accept and trust human touch through what?
desensitization and habituation
Evidence that horses have the ability to feel pain includes:
- lameness
- painkillers are effective
Like olfaction, the horse’s sense of taste also relies on _____?
chemoreceptors
What are the horses basic tastes?
- bitter
- sweet
- salt
- sour
There is also evidence that horses, like children, may develop a __________ over time
sweet tooth
What are the horse’s flavor preferences?
- fenugreek (aromatic herb)
- banana
- cherry (artificial flavoring only - natural cherry trees can cause toxicity in horses)
- rosemary
- cumin
- carrot
- peppermint
- oregano
What are the 8 categories of horse behavior?
- Ingestive (eating/drinking)
- Eliminative (waste removal)
- Play
- Investigative
- Vigilance
- Caregiving / care seeking
- Agonistic / aggressive
- Social facilitation
What is ingestive behavior?
the selection and intake of food, milk, and water at each stage throughout the horse’s lifespan
How are horses designed to consume food?
designed to consume small, frequent meals consisting of primarily high-fiber, low-quality forages like hay and grasses
Where should horses browse from?
shrubs, bushes, and trees
What are the key components of normal grazing behavior?
locomotion and movement as the horse moves from feeding station to feeding station
What distance can be covered in a single day while grazing?
several miles
How do horses tend to take trips to go get a drink of water?
tend to go as a herd
When do horses consume more water?
tend to consume more water in the warm weather than in cool weather
What are horses finicky about when it comes to water?
can be finicky about the smell and source of water
Why is it important to be observant of a horse’s ingestive and eliminative behavior?
changes in eating and drinking and/or eliminative behavior may be signs of pain, discomfort, or illness
What is eliminative behavior?
actions and behaviors the horse does to get waste products out
What are the primary eliminative mechanisms?
urination and defecation
What management is required of horse waste
- removal of manure from the horse’s living space
- where to put it
- what to do with it
What will discriminate horses do in terms of elimination?
they will go in the same place almost every time
Do horses prefer to eat grass where they have eliminated?
no
Investigative behavior
many horses are naturally curious and they explore their surroundings through investigative behavior
When can the horse’s curiosity work in our advantage?
during training
What is play behavior?
often characterized as actions that seem to resemble more serious behaviors, but are carried out with less serious intent, and have an element of pleasure or surprise
When is play behavior especially important?
for the development of young horses
What are the four distinct categories of play?
- object play
- locomotor play
- play fighting
- sexual play
Who do horses seek care from/ for?
seek care from other horses, but also aim to give care to each other
When can caregiving behaviors be seen?
when pasture mates scratch each other’s withers and backs
What is the whinny?
characterized as an attention-seeking behavior and is displayed even in neonatal foals
What is allogrooming?
care directed from one horse to another
What is mutual grooming?
when horses are reciprocating care behaviors (grooming)
What is autogrooming?
the ways in which the horse aims to groom himself
What are the autogrooming behaviors?
- rolling
- scratching with hooves
- scratching with teeth
- rubbing on objects
Where do horses prefer to roll?
in dry sandy areas, and rolling is one of the horse’s only means for grooming the topside of the body
What is agonistic behavior?
includes actions related to threats, aggression, and attacks as well has passivity and attempts to defend, escape, or avoid aggression
What is agonistic behavior very much involved in?
in the development, maintenance, and organization of the herd
What are aggressive behaviors?
- biting
- kicking
- striking
- charging
- fleeing
What will you see when you observe a group of horses resting out in a field?
at least one horse will be standing at attention
What are herd dynamics?
social hierarchy, pecking order, or dominance hierarchy
Will hierarchy for food and shelter always be identical?
not always
What does an established dominance hierarchy assist in?
minimizing aggressive interactions in the long run and maintaining stable social groups helps to minimize injury
Dominant horses
will be prone to getting too much feed and becoming overly fat
More submissive horses
will be prone to becoming undernourished and thinner
For management consideration, how much space should horses have?
sufficient space for each horse to display more threat like behaviors and minimize actual aggressive actions (like biting or kicking)
For management consideration, what should corners be like in fences?
should avoid share corners and angles in fence lines whenever possible
Where should you place high values resources (e.g. water tank or hay feeder)?
in open areas where horses have the ability to move around and escape without getting trapped
How large should building openings be?
large enough to allow horses to comfortably pass through. smaller doorways may help keep the shed warmer, but horses will use it less if they fear they might be “trapped”
How should you house different age groups?
should house then separately. older horses will typically be more dominant than young horses leading to overly fed old horses and underfed younsters.
What is critical for horse-to-human and horse-to-horse communication?
body language
How does the horse relay how he is feeling?
uses his whole body and voice
What are the most salient areas of the body to observe and read?
the ears, eyes, lips, head position, and tail
ears pricked
ears held stiff with openings pointed directly forward usually means the horse is alert
ears neutral
is when the ears are held loosely upward, openings facing forward or outward