Episode 18: Can Your Pet See Colors, and the Owner Gender Difference

So often we want to describe the way our pets see as simply a black and white version of what we see, but that simply is not true. Pets do not see all the colors we do, but dogs can see basically two colors, a blue-violet and a yellow-green, while cats, who can see shades of gray better than dogs, can also see blue and yellow. The pet’s tapetum, which is a reflective surface on the back of the eye, allows pets to see better, though less distinctly, at night. This tapetum also causes the odd colors to appear in pictures. while human’s lack of a reflective tapetum leads to “red eye.”

SuSzuNanuJoerss

Su Szu and Nanu Joerss, demonstrating reflective tapetums and humping

 

Eme and Nyah

Eme and Nyah

 

Beyond colors, dogs and cats simple process the images differently than we humans do. The first processing center of vision, which is located in front of the retina’s rods and cones (which detect light), are set up differently. While humans are designed to to edges, dogs and cats are designed to see horizontal movement, such as a rabbit running across the ground.

retina

 

This processing center in humans can be tricked, which is how optical illusions are designed. With complex patterns of colors, we can send these processing cells into a feedback loop, making it look like a picture is moving, even when it is not.

03-wd0909-Optical-Illusions-2

 

05-wd0909-Optical-Illusions-2

John and Dr. Rumore also discuss how a man’s deeper voice is more suited for reprimanding a pet, while a higher pitched voice is better at praising a pet. These voice tones can lead to trouble men and women train puppies, or even adult dogs.

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Listen to Episode 18: Can Your Pet See Colors, and the Owner Gender Difference

Episode 12: Goopy Eyes, and Why Half of All Microchips are Useless

No Visine for PetsWhat it means when your pet has goopy eyes, and what you can do at home, and when you need to get to veterinarian as soon as possible. Things never to use- contact lens cleaner, Visine, ClearEyes or similar in your pet’s eyes. We talk about entropion and ectropion, both are disorders of the eyelids. We also discuss Keratoconjuctiva Sicca (dry eye) and how to properly treat Cherry Eyes.

Some pictures of eyes are coming- if injured eyes gross you out, you have been warned!

Entropion (Thanks Wikipedia!) The eyelashes are rubbing on the eyeball, causing the eye to turn blue and brown with irritation.

Ectropion in a Cocker Spaniel (thanks Wikipedia). The eyelids are drooping too low, preventing this dog from blinking properly.

Cherry Eye- Don’t Cut that Off! The tear gland of the third eyelid is inflamed and prolapsed.

Dr. Rumore’s wife finds a lost beagle, and the importance of microchips, and registering them, is highlighted. If you need to find out which company maintains your pet’s microchip registry, you can look it here.

Microchip and Rice Grain- From How Stuff Works

John changes his name from John Siposawardwinningtalkjournalist to Johnny Edge, or maybe Shannon. We also discuss how to say “shmushed up face” in latin (brachiocephalic).

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Listen to: Episode 12: Goopy Eyes, and Why Half of All Microchips are Useless

Episode 9: Skinny Cats and Fat Dogs: Thyroid Disease and Your Pet’s Real Age

Thin hyperthyroid cat- thanks Dr. Mark Peterson

Thin hyperthyroid cat- thanks Dr. Mark Peterson

 

Not His Ideal Weight

Not His Ideal Weight

A cat eats a bunch but still loses weight, starts yowling in the middle of the night, and then goes blind. A dog eats very little, but keeps gaining weight, drinking way too much, with a poor hair coat and weakness in their hind end. It’s the Jack Sprat and his wife of veterinary medicine- thyroid disease. Cats (usually) produce too much thyroid hormone, while dogs produce too little. John and Dr. Rumore discuss some symptoms and treatments, as well as why some people can’t tell when their pets go blind and how veterinary school induces disease. We also discus why the “7 years for every human year” is wrong for younger pets, why flame retardants may be a big problem, and how much it hurts to step on legos.

If you are a regular listener, you may have caught us. We reversed episode 8 and 9. Was it an accident, or a secret code that leads to a treasure and the secret of the universe? I guess you will see…

Here’s some more information about hyperthyroidism cats

And some about hypothyroidism in dog

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Listen to: Episode 9: Skinny Cats and Fat Dogs: Thyroid Disease and Your Pet’s Real Age