Otters have been filmed eating puffaddder shysharks on the coast of False Bay, South Africa.
The attack took place off the coast of Portugal and is the latest in a string of similar incidents.
The orcas appear to have targeted the bowhead tongues, a scientist analyzing pictures of the carcasses said.
Researchers say three whales were responsible for more than 60 percent of recent attacks.
The reasons behind the snake's unusual feeding behavior remains something of a mystery.
Since Monday, over 450 long-finned pilot whales have been stranded on the shores of Macquarie Harbor in Australia.
Cunningham's skinks are highly unusual among lizards and reptiles given that they live in stable, social groups.
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The shark was tagged by marine research non-profit OCEARCH in the waters off Cape Breton, Nova Scotia, Canada.
"This type of feeding is very risky, as dolphins run the risk of remaining stranded," said researcher Daniele Cagnazzi.
These long-term cooperative relationships between unrelated bats appear to be similar in form and function to human friendships.
Robber crabs—also known as coconut crabs—are the largest terrestrial invertebrates in the world
The yellow-footed antechinus is a marsupial has a rare and unusual mating behavior known as "male semelparity."
"We show that interactions between meerkat groups are never tolerant," researcher Mark Dyble said.
Researchers monitored nearly 300 sharks over the course of more than four years.
"I saw that alpha females are the true leaders of the pack, not the big alpha males. Wolves have a matriarchal society and males seem to totally accept that, " expert Rick McIntyre said.
"This discovery is striking given how small their brains are," researcher Gene Robinson said.
Researchers investigated a unique group of dolphins in Western Australia which use sponges as tools to forage for food.
The mice on board the International Space Station started "race-tracking" as part of a coordinated group activity.
Our canine pals' cognitive abilities were overstated, researchers said.
Dolphin societies are surprisingly complex.
Researchers reviewed a number of studies into turn-taking behavior in the animal kingdom.
Researchers suggest that the older females may be seducing the males with pheromone signals.
Researchers found that related beluga whales returned to the same locations every year and that this behavior was passed down from generation to generation, likely from mother to calf.
Researchers recorded an incredible variety of freeform songs over a four year period.