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12
votes
1answer
1k views

Do sharks die if they stop swimming?

I've seen this claim several places: If a shark stops swimming it will die. (from wikianswers, alongside contradictory text) [I]f they do not swim, then they will have no oxygen and they will ...
4
votes
1answer
220 views

Do bedbugs spread disease?

The CDC (the US Centers for Disease Control and Prevention) asserts that: Bed bugs should not be considered as a medical or public health hazard. Bed bugs are not known to spread disease. Can ...
2
votes
1answer
633 views

Did large herbivorous dinosaurs have any predators?

I went to the Natural History Museum in London today. I saw the dinosaur exhibition, and in the exhibition was this image, of an Allosaurus attacking a Diplodocus: Image by John Sibbick This ...
4
votes
0answers
299 views

Are fish addictive to cats?

Today I found an interesting article that claims that feeding fish to cat is not a good idea: Fish should be avoided, except for occasional use, for many reasons including: heavy metal ...
7
votes
1answer
3k views

Do sharks never sleep?

My friend was saying that shark never sleeps. Because to keep it afloat, it has to continuously swim, so that it can't sleep. This claim is repeated in the Ocean of Know: They certainly need to ...
12
votes
4answers
8k views

Is 94% of male giraffe sexual behaviour homosexual?

I've been trying to track down the source of a claim that research has shown giraffe exhibiting a really high rate of male homosexual relations. Going through the blog spam leads me to a site without ...
6
votes
1answer
4k views

Do koalas sleep 22 hours a day?

I came across this image on Facebook from the website Learn Something Every Day: When I searched for a reliable source, I came across several sites of the same kind (OMG Facts, Snapple Real ...
19
votes
1answer
755 views

Do goldfishes have a two or three seconds memory?

It is often claimed that goldfishes have a very short memory, usually of two or three seconds. Like most claims in the real world, I have yet to see a source provided for it. So, do goldfishes have a ...
17
votes
2answers
1k views

Did humans see fish at the bottom of the world's deepest trench, the Mariana trench?

Several Wikipedia articles, (Bathyscaphe, Trieste and Challenger Deep), about the 1960 Bathyscaphe Trieste trip to Challenger Deep, the deepest part of the Mariana trench, mention observations of ...
21
votes
1answer
9k views

Can kangaroos walk backwards?

Source From Exploring Nature: They cannot jump backward because of their thick, muscular tail. Their long feet and heavy tail also make walking impossible, forward or backward. The ...
24
votes
1answer
3k views

Are (wild) elephants afraid of mice?

Source I have heard from people working in zoos that the myth of elephants being afraid of mice is not true. Here is a short video of a zoo elephant clearly not caring about a mouse. I don't find ...
8
votes
1answer
475 views

How likely is it that the Ivory Billed Woodpecker is not extinct?

Currently at the JREF forums, there is a big debate going on about possible Ivory Billed Woodpecker sightings. This bird has been thought to be extinct for over 50 years, and no reliable sightings ...