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.
Artificial Lights and Bat Drinking Behavior
Darkness is a diminishing natural resource. Over the last hundredyears, human development and urbanization have changed the nocturnallandscape, making the nighttime sky 20 percent brighter.
This is bad news for nocturnal animals like bats, which depend on the protection offered by darkness. In my latest Animal Minds blog post, I take a look at how artificial lighting affects bat drinking behavior.
Read the story here: Do Artificial Lights Cause Drinking Problems in Bats?
Promiscuous Lionesses Keep Cubs Safe
African lions seem to exemplify the conflict between genders. Acoalition of males will defend their right to exclusively breed with agroup of females against intruding males, who won’t think twice aboutkilling all the cubs in order to hasten the siring of their own with thefemales.
But in a subspecies of lion, infanticide and sexual coercion are much rarer – and much of it appears to be due to the savvy mating strategy of the females.
Read the whole story at my Animal Minds blog: Who's the Daddy? For Lion Cubs, It's Safer Not to Know.
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.
How Whip Spiders Smell Their Way Home
Whip spiders, or amblypygids, are arachnids, but only six of their eight legs are for walking. The front two are elongated sensory structures that process, among other things, smells. Whip spiders use these sensory legs to sniff their way back home after a night of hunting.
Read all about it in my latest Animal Minds post: The Arachnid That Smells With Its Legs