Where Dogs Get Their Personalities, How Smells Work, and a Skill that Improves with Age

Curiosity Weekly

Warner Bros. Discovery

Self-improvement, Science, Astronomy, Education

4.6 • 935 Ratings

🗓️ 4 October 2019

⏱️ 10 minutes

🔗️ Recording | iTunes | RSS

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Summary

Learn about how dogs’ personalities are rooted in their DNA; one skill that doesn’t get worse as you get older; and how your sense of smell works.

In this podcast, Cody Gough and Ashley Hamer discuss the following stories from Curiosity.com to help you get smarter and learn something new in just a few minutes:

Dogs' Personalities Are Rooted in Their DNA — https://curiosity.im/2OfDwvJ
Scientists Have Identified One Skill that Doesn't Deteriorate with Age — https://curiosity.im/2LwW5tm

Additional resources discussed:

How does the sense of smell work? | HowStuffWorks — https://health.howstuffworks.com/mental-health/human-nature/perception/question139.htm
Human Nose Can Detect a Trillion Smells | Science — https://www.sciencemag.org/news/2014/03/human-nose-can-detect-trillion-smells

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Find episode transcript here: https://curiosity-daily-4e53644e.simplecast.com/episodes/where-dogs-get-their-personalities-how-smells-work-and-a-skill-that-improves-with-age

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Transcript

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0:00.0	Hi, we're here from Curiosity.com to help you get smarter in just a few minutes.
0:04.8	I'm Cody Gough. And I'm Ashley Hamer.
0:06.8	Today you learn about where dogs personalities come from, one skill that doesn't get worse as you
0:11.6	get older, and what smells are made of.
0:14.0	Let's smell some curiosity.
0:15.0	Have you ever wondered why your golden retriever is so friendly or why your neighbor's German
0:19.9	Shepherd is such a fierce protector?
0:22.3	It turns out that a lot of the personality traits that differentiate dog breeds
0:26.0	are rooted in their genes.
0:28.0	But here's something even cooler.
0:30.0	Humans actually change dogs brains when they select for those behaviors that make each breed unique.
0:35.0	Amazing, right?
0:37.0	Okay, let me back up for a second.
0:39.0	A 2019 study used reports from the canine behavior assessment and research
0:43.4	questionnaire to identify 14 key doggy personality traits that may have a
0:47.7	genetic basis. That questionnaire is an online survey that's been helping pet
0:52.1	owners assess their dog's
0:53.2	behavior since 2005 and researchers compared the responses in that
0:57.2	questionnaire to genetic data that had been gathered by other researchers. In the
1:01.4	end they linked genetic information to the behavioral data of around 14,000
1:06.2	dogs from dozens of breeds and found 131 places in a dog's DNA that may affect those traits.
1:13.0	The study found that the most inheritable traits included trainability,
	...

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