Did you know that a rat's ribs are hinged at the spine

Did you know that a rat's ribs are hinged at the spine 1 0
Posted by duddy   August 24, 2015   13525 views
It's true, and this enables them to easily squeeze through the tightest spaces - like the pipes draining your toilet. And rats are great swimmers too; they can hold their breath for up to three minutes and swim non-stop for more than 48 hours! For more information, watch the video.
rats mice animal
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