(via National Geographic)
Pharyngula
Evolution, development, and random biological ejaculations from a godless liberal
The Visible Man. The Visible Dog. The Visible Head. The Visible Horse. The Visible Cow. The Visible V8 Engine. My favorite, The Visible Woman, which taught me that under their clothes, women were glassy smooth and transparent. I had all those model kits when I was a kid, but one thing I never had was The Visible Frog. Now I could collect the real thing, if I lived in the Congo.
(via Share this:
You all follow Creature Cast, I presume, and have already seen the story of the strangler fig, but I’ll just echo it here anyway.
Oooh, the miracle of childbirth: watch a clutch of octopus eggs hatch.
No matter what kind of dump you live in, at least you have the satisfaction of knowing you don’t live in an echinoderm cloaca.
Although…it really does look quite nice on the outside.
Inbreeding is bad. It increases the frequency of homozygosity for deleterious traits.
There’s this little thing called pleiotropy. Selection is a powerful tool, but traits can have multiple effects, and extreme selection for peculiarities can have unpleasant side effects — you may think a pug’s curly tail is adorable, but it comes with all kinds of spinal ailments. And cute little doggies with cute little heads may have skulls too small for their brains, leading to syringomyelia.
If you’ve got an hour, this video is worth watching. Add pedigree dog shows to puppy mills as examples of animal abuse. Warning: there are scenes of dogs in extreme pain and distress here; not because anyone is directly harming them, but entirely because they’ve inherited a suite of damaging genetic characters that make their lives a misery.
The most appalling parts of the documentary are the responsible people behind the dog shows and the kennel club breeding programs that arbitrarily set ludicrous standards for show dogs. There’s a judge declaring that the German Shepherds with the weakened, ataxic hindquarters of their ideal is genetically superior, for instance. And then there are the photos of what dachshunds, beagles, and boxers looked like in the 19th century compared to the show dog ideal of the 20th — in just a little over a hundred years, we’ve bred this poor animals into a monstrous state.
