Portal:Animals/Did you know/4

...that the robin (pictured) has an average life expectancy of about one year, but has been known to live up to twelve years?
...that the Zebra mussel, originally native to Russia, has spread to North America, the British Isles, Spain, and Sweden, where it is considered a nuisance because it can form colonies large enough to block pipelines?
...that the Southern Giant Petrel is the leading predator to the Emperor Penguin, and may be responsible for up to 34% of chick deaths in some colonies?
...that some goats freeze for ten seconds whenever startled due to the genetic condition known as myotonia congenita, and have thus been dubbed "fainting goats"?
...that Eurasian badgers are believed to be partially responsible for the spread of bovine tuberculosis?