Chapter

The Biology of Grizzly Bears
listen on Spotify
07:35 - 15:08 (07:33)

Learn about the biology of grizzly bears and how their teeth can be used to determine their age.

Clips
The teeth of grizzly bears can be used to determine their age through counting annuli or yearly growth rings, which can be seen in finely sectioned teeth.
07:35 - 12:07 (04:32)
listen on Spotify
Grizzly bears
Summary

The teeth of grizzly bears can be used to determine their age through counting annuli or yearly growth rings, which can be seen in finely sectioned teeth. This is despite grizzly bears feeding extensively on caribou calves, whose blood stains their teeth.

Chapter
The Biology of Grizzly Bears
Episode
#383: Mike Phillips — How to Save a Species
Podcast
The Tim Ferriss Show
Gray wolves were on the brink of extinction when Doug Smith started working on wolf recovery in 1980, and he has been involved nearly every day since then.
12:07 - 15:08 (03:01)
listen on Spotify
Gray Wolves
Summary

Gray wolves were on the brink of extinction when Doug Smith started working on wolf recovery in 1980, and he has been involved nearly every day since then. Carnivores, like gray wolves, are always rarer than their prey in natural systems, and Smith was fascinated by the restoration effort for these animals.

Chapter
The Biology of Grizzly Bears
Episode
#383: Mike Phillips — How to Save a Species
Podcast
The Tim Ferriss Show