Octopus Arms Have a Mind of Their Own
Octopuses and their relatives stand out from other invertebrates in terms of their cognitive complexity and the range of their behaviors. Despite their evolutionary distance from humans and other vertebrates, these animals can use tools, solve complex puzzles, recognize individual people, and explore objects through play. They do all this and more with a completely unique nervous system.
Read more at my Animal Minds blog: Octopus Arms Have a Mind of Their Own.
Weird Ways Animal Moms Feed Their Babies
Any human mom can attest that keeping a baby fed and happy can be a Herculean task. That’s why some animal mothers have evolved some truly creative—and sometimes surprising—strategies. These include regurgitating nectar, sequestering toxins, and even self-sacrifice.
Read my latest for National Geographic's Weird & Wild news: Bats Regurgitate Nectar for Their Babies -- A New Discovery.
Elephants Smell Out Differences in Quantity
A new study finds that elephants can discriminate between two quantities of food using only their sense of smell. The study is an example of the move towards more species-specific, ecologically valid cognition tests and could have applications in conservation.
Read more at my Animal Minds blog: Elephants Smell Out Differences in Quantity.
Emotional Mirror Neurons in Rats
Researchers from the Netherlands Institute for Neuroscience have demonstrated that specific neurons in the rat brain are active both when a rat experiences pain itself and when it observes another rat in pain. The results, published today in Current Biology, suggest that sharing the emotions of others is a common mammalian trait.
Read my article on the study here: Rats Feel One Another's Pain.
When Animals are Both Defended and Defenseless
It sounds like a good conservation strategy: If a native species is being killed by invasive predators, move the native species to a predator-free sanctuary where their numbers can recover. However, a new paper suggests this approach could result in problems if the native species ever faces their invasive foes again.
Read my latest Animal Minds blog post to see how this played out in New Zealand robins: When Animals are Both Defended and Defenseless.