Rats are another species often seen in a negative light but they too are among the cleverest animals. A 2007 study found they have "metacognition," an ability associated with problem solving that only humans and a few primates were thought to have previously.
Rats also have a brilliant sense of smell and the giant African species has been trained to detect land mines, bombs and even tuberculosis in humans. Interestingly they also dream in a similar way to us.
Now sometimes we are amazed by these animal ability stories but other times you just have to go "aww." A springer spaniel on a farm in Devon has taken it upon himself to help feed the many lambs they have. Having learnt how to hold a bucket and bottle the clever dog can allow the lambs to feed - but he doesn't do it for nothing - he expects a nice tummy nuzzle from the sheep afterwards!
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