Human-Animal Bond, Assistance Dogs, Breeds, and Sensory Physiology

Vocabulary practice flashcards generated from lecture material covering companion animal economics, bonding mechanisms, working dog categories, canine/feline breed classifications, and specialized sensory physiology.

Neoteny

The selection of juvenile physical and behavioral characteristics that encourage human compassion and discourage aggression.

Biophilia

The innate human appreciation of the natural world, which varies depending on the species of pet.

Tamed

The process of conditioning a single individual animal to live with humans without altering its genetic makeup.

Domestication

The process where humans alter an animal species' genes over multiple generations (such as over $10$ generations).

Oxytocin

A feel-good hormone involved in the human-animal bonding loop that reduces stress, with levels increasing in both humans and dogs within $5\text{--}20$\,min of interaction.

Assistance Dog

A dog trained to perform $3$ or more specific tasks for an individual with a disability, holding public access and housing rights.

Species

A group of living organisms that can interbreed with each other.

Subspecies

A smaller group of living organisms within a species that can interbreed with each other but have physical and genetic differences.

Breed (AKC Definition)

A domestic race of dogs selected and maintained by humans with a common gene pool, characterized by specific appearance and function.

Breed-Specific Legislation (BSL)

Laws or local ordinances that regulate or ban specific dog breeds believed to pose a hazard or danger to the public.

Header

A herding style where the dog selectively controls livestock from the front and side using intense eye contact ("giving eye") and crouching.

Heeler

A herding style where the dog drives livestock forward from behind by nipping at the heels, body slamming, and barking.

Tending

A herding style focused on boundary work, where the dog acts as a live fence to keep animals within a designated area.

Designer Breeds

Offspring resulting from the purposeful crossbreeding of two distinct purebred parents (e.g., Goldendoodle, Labradoodle, Cockapoo).

Hyposmia

A decreased sensation of smell caused by damage to the olfactory mucosa, chemical exposure, cancer, thermal trauma, viral infection, or certain medications.

Flehmen Response

A "scent-sucking" behavior where animals draw air through ducts in the roof of the mouth behind the incisors to pass chemical signals into the vomeronasal organ.

Filiform Papillae

Backwards-facing structures on a cat's tongue used for grooming, shredding meat off bones, and body cooling.

Whisker Fatigue

Sensory overstimulation of a cat's tactile system caused by repetitive whisker contact, resulting in agitation, unsettled behavior, or refusal to eat.

Tapetum Lucidum

A thin reflective layer located between the retina and optic nerve that magnifies and reflects light back to the retina to enhance vision in low light.

Mesocephalic

A skull shape classification representing a medium-sized skull with a cephalic index ($\text{CI}$) between $50$ and $60$ ($50 < \text{CI} < 60$).

Dolichocephalic

A long-faced skull shape classification characterized by a cephalic index ($\text{CI}$) of less than $50$ ($\text{CI} < 50$).

Brachycephalic

A short, broad skull shape classification characterized by a cephalic index ($\text{CI}$) greater than $60$ ($\text{CI} > 60$).

Third Eyelid

An ocular structure that distributes tears, protects the cornea, keeps moisture in the eye, and prevents eye infections.

Rods

Retinal photoreceptor cells that enable motion detection and vision in low light without mediating color vision.

Cones

Retinal photoreceptor cells activated at higher light levels that allow organisms to perceive fine detail and color.

Heterochromia

A condition in which an individual animal possesses two different eye colors or multiple distinct colors within an eye.

Cataracts

Clouding of the crystalline lens of the eye, commonly caused in older animals by long-term oxidative stress and damage to lens epithelial cells.

Detached Retina

Vision loss caused by fluid accumulation behind the retina, often secondary to hypertension from conditions like hyperthyroidism or kidney failure.

Lens Luxation

Displacement of the crystalline eye lens out of its normal position, which can cause severe glaucoma and potential rupture of the eye.

Glaucoma

An ocular disorder characterized by pathologically increased intraocular pressure, causing severe pain.

Domestication Syndrome

A characteristic suite of physical traits (e.g., floppy ears, white coat patches, shortened snouts) and behavioral traits (e.g., reduced fear, increased playfulness) observed in domesticated animals compared to wild relatives.

Olfactory and Nasal Anatomy Diagram

Anatomical diagram depicting the locations of the respiratory epithelium, olfactory epithelium, vomeronasal organ, and olfactory bulb within the canine/feline nasal structure.

Species Scent Organ Comparison Table

Comparative overview table illustrating differences in scent receptor counts, olfactory epithelium surface areas, vomeronasal functions, and sensitivity levels across dogs, cats, and humans.