The Otter – Lutra lutra – Nutria Europea. A carnivorous mammal in the subfamily Lutrinae. They are semiaquatic in Spain with diets based mostly on fish and invertebrates.
Although most European otters tend to prey primarily on fish, some have developed a taste for frogs and toads—a food choice that requires some deft preparation. Because common toads (Bufo bufo) have toxins in both their skin and the glands on either side near the front of their bodies, these resourceful otters use their sharp teeth to remove the skin from the back half of the toads and then eat just the hind legs. While common frogs (Rana rana) don’t have toxic skin or glands, most otters appear to not know the difference, and generally play it safe by following the same food-prep routine they use on toads.
There is a brilliant photo of an otter with a frog on the website link below. https://www.biographic.com/frog-leg-feast/
A slow population recovery.
With the creation of many natural and national parks in Spain, and other environmental awareness campaigns, the otter population seems to have increased, certainly in Andalusia, over the past 20 years. However, this recovery has been relatively slow, and in some areas the impact of human activities still prevents the species, from expanding into new territory.
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