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Scientists just can't leave animals well enough alone. In some cases, it's for our benefit, whether we want to create new medicine, create better drug-sniffing dogs, or just breed giant delicious salmon. But sometimes it's for the animals themselves, shown with groundbreaking prostheses or embedded GPS to protect endangered animals from poachers. Check out our gallery of twelve of the craziest ways scientists are messing with animals.
Click to launch our tour of science-customized animals
Whether these are good or bad for us, ethically, morally, environmentally...well, those are arguments that won't stop raging anytime soon. (See the truckload of legislation attempting to variously ban or promote genetically modified animals for food, if you want an exhausting amount of examples.) One thing, at least, is beyond arguing: Those cloned drug-sniffer puppies are super cute, right guys?

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Twelve Extreme Animal Modifications in the Name of Science

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Scientists just can't leave animals well enough alone. In some cases, it's for our benefit, whether we want to create new medicine, create better drug-sniffing dogs, or just breed giant delicious salmon. But sometimes it's for the animals themselves, shown with groundbreaking prostheses or embedded GPS to protect endangered animals from poachers.

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suprachiasmatic nucleus (SCN) aka internal clock, overview 

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suprachiasmatic nucleus (SCN) aka internal clock, overview 

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Suprachiasmatic Nucleus - an overview | ScienceDirect Topics

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The suprachiasmatic nucleus (SCN) is a bilateral structure that is the central pacemaker of the circadian timing system (CTS) and regulates most, if not all, circadian rhythms in the body.

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Using animal models to study genetic disease

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Using animal models to study genetic disease

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The Use of Animal Models in Studying Genetic Disease | Learn Science at Scitable

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Rodents are the most common type of mammal employed in experimental studies, and extensive research has been conducted using rats, mice, gerbils, guinea pigs, and hamsters. Among these rodents, the majority of genetic studies, especially those involving disease, have employed mice, not only because their genomes are so similar to that of humans, but also because of their availability, ease of handling, high reproductive rates, and relatively low cost of use.

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comparative genomics and the human genome  

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comparative genomics and the human genome  

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Researchers have sequenced the complete genomes of hundreds of animals and plants-more than 250 animal species and 50 species of birds alone-and the list continues to grow almost daily.

In addition to the sequencing of the human genome, which was completed in 2003, scientists involved in the Human Genome Project sequenced the genomes of a number of model organisms that are commonly used as surrogates in studying human biology. These include the rat, puffer fish, fruit fly, sea squirt, roundworm, and the bacterium Escherichia coli. For some organisms NHGRI has sequenced many varieties, providing critical data for understanding genetic variation.

DNA sequencing centers supported by NHGRI also have sequenced genomes of the chicken, dog, honey bee, gorilla, chimpanzee, sea urchin, fungi and many other organisms.

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Researchers have sequenced the complete genomes of hundreds of animals and plants-more than 250 animal species and 50 species of birds alone-and the list continues to grow almost daily. In addition to the sequencing of the human genome, which was completed in 2003, scientists involved in the Human Genome Project sequenced the genomes of a number of model organisms that are commonly used as surrogates in studying human biology.