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 Wednesday, November 19, 2008

When an Engineer Owns a Dog

By Greg Perkins @ 2:32 PM

This is hilarious and cool! But now I can't help wondering if the connection I feel with the dogs I play with is an illusion. ;^)

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 Comments

Wednesday, November 19, 2008 at 15:56:53 mst
Comment ID: #1
Name: Roderick Fitts
E-mail: rodfitts(at)gmail.com

All they care about is the damn ball, lol!

I should have known...


Wednesday, November 19, 2008 at 20:41:54 mst
Comment ID: #2
Name: Andrew Baker
E-mail: smoke_owner(at)mac.com

That is why I love cats. At least they are honest. Although seeing my cat once and a while made me think she might possibly on an outside chance have some genuine affection for me.


Wednesday, November 19, 2008 at 21:59:44 mst
Comment ID: #3
Name: Amy Nasir

This is why I love my free-roaming, house bunny, Dahly! I know she is totally into me as her mommy. (I think you've seen this Roderick!) Kisses, total gratitude for massages, and she misses me terribly when I'm out of town or working late. Super-sweet and smart, and will ring a bell with her mouth when she wants a treat. A perfect furry friend (except when your shoe is in her way!).


Thursday, November 20, 2008 at 6:01:10 mst
Comment ID: #4
Name: Wendy

With three Golden Retrievers, that device could come in very handy! It's kind of odd to see a Dachshund being such a fetching machine, especially when they're not bred to it.

Cats and dogs are inherently different since cats are lone animals and dogs are pack animals. Dogs need companionship.


Thursday, November 20, 2008 at 8:59:48 mst
Comment ID: #5
Name: Lemuel
E-mail: synthesist(at)ymail.com

Yeah, keep building robots, guys. We'll see where that leads.

First they came for the dogs, and I didn't speak up because I didn't own a dog ...


Thursday, November 20, 2008 at 10:08:10 mst
Comment ID: #6
Name: Ryan

Dog's probably don't have to capacity to distinguish to clearly between living and non-living things especially if those non-living things move like that. Maybe the dog actually sees the machine as a companion.


Thursday, November 20, 2008 at 10:33:25 mst
Comment ID: #7
Name: Wendy

Ryan: They can tell that much. A lot of it has to do with smell. Now maybe if this thing were a Honda-designed, walking, gesturing, talking robot with some human scent sprayed on it, a dog may get confused, but not this thing.


Thursday, November 20, 2008 at 10:50:44 mst
Comment ID: #8
Name: Wendy

And just to clarify, I'm not suggesting that they have the *concepts* of living vs. non-living. If I had to say, I'd guess that they think of external things along the lines of "food", "non-food", "moving food" and "pack member".


Thursday, November 20, 2008 at 16:21:28 mst
Comment ID: #9
Name: Ryan

That's a good point on the sense of smell. I'm anosmic so I tend to forget about that sense. Still I don't know if they've got the ability to distinguish between non-living moving things and living moving things. Maybe the dog thinks it's a non-smelly living thing. Anyway, I'm just speculating wildly.


Thursday, November 20, 2008 at 19:10:53 mst
Comment ID: #10
Name: Adam Reed
E-mail: adamreedatalumdotmitdotedu
URL: http://www.calstatela.edu/faculty/areed2

The dog is just enjoying his exercise machine.


Friday, November 21, 2008 at 11:23:22 mst
Comment ID: #11
Name: Valda Redfern
E-mail: valda.redfern(at)gmail.com
URL: http://valzhalla.blogspot.com

What we need is a practical way of harnessing the power of household pets. If that dog, for instance, were connected to some kind of dynamo, then the exercise machine might be able to indirectly generate more power than it used. My very affectionate cats have a tendency to gallop round the house when I come home after an absence; how can I use this energy? Does the heat they develop during an average gallop make up for the heat lost when I open the door? If so, can I reduce my heating bills by staging false homecomings?


Friday, November 21, 2008 at 12:55:28 mst
Comment ID: #12
Name: William H Stoddard
E-mail: whswhs(at)mindspring.com
URL: http://whswhs.livejournal.com/profile

Basal metabolism is proportional to the 0.75 power of body weight. A human being, with a typical weight of 150 lbs., has a basal metabolic rate of roughly 100 watts. A fairly typical cat might be around 1/16 the weight (or a bit less than 10 lbs.), and had 1/8 the basal metabolism, or about 12.5 watts.

Most mammals have a top end metabolic rate about 10x basal metabolism. (Canids are the exception; they go up to 30x when running all out.) So figure a cat charging around at high speed puts out about 125 watts. I think indoor heaters run around 500-1000 watts, so a cat running around all out for one minute is roughly comparable to turning the electric heater on for 15 seconds. The great majority of that energy is going to come out directly as heat, because mammals are only around 20-25% efficient as engines for doing mechanical work.

I'm betting your cats don't sustain that effort level for very long. On the other hand, having multiple cats will boost the output.

Personally, I find cats better suited as heating pads than as space heaters. They're also useful as sleep inducing devices; my girlfriend and I have joked for years about the sleep fields our cats create.


Saturday, November 22, 2008 at 15:51:38 mst
Comment ID: #13
Name: Roderick Fitts
E-mail: rodfitts(at)gmail.com

Amy, I remember Dahly and can vouch for you.

And I can vouch for the bunny's furious rampage (joking!) when one's foot is in her way. The first time it happened, I distinctly remember thinking "is some beast tearing my foot apart?"--and then I saw the beast: it was Dahly. Seriously though, Dahly's an awesome, loving pet.

...Just don't get in her way ;D


Sunday, December 13, 2009 at 12:02:16 mst
Comment ID: #14
Name: Robert
E-mail: ghulk(at)gmx.net
URL: http://www.rauhaardackel.org

This is really great ;)


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