15 of the largest living things on the planet

The dinosaurs may be long gone, but plenty of truly giant things are still living on this planet — including the largest animal ever known to exist.

And the No. 1 largest living thing, according to scientists, is a pretty surprising contender.

There's always a chance we could stumble on something even bigger, but that would be quite a feat.

We've gathered a handful of superlatively large organisms below so you can guess what's largest and see if you're right.

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Largest virus: Pithovirus sibericum

The largest known virus was thawed out of 35,000-year-old permafrost and is 1.5 micrometers long. That's too small to see without a microscope, but for a virus — it's huge.

Source: Smithsonian Magazine

Largest spider: the Goliath bird-eating spider.

Source: London's Natural History Museum

Largest fruit: jackfruit.