Rats 'could grow bigger than sheep'
Rats could grow to be bigger than sheep as they evolve to fill vacant ecological niches, a geologist has claimed Rats could grow to the size of sheep or even bigger as they evolve to fill vacant ecological niches, it is claimed.
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#1 Feb 3, 2014
I'm afraid the author of this article is behind the times. Rats are already bigger than sheep, and one of them is Governor of New Jersey.
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#2 Feb 3, 2014
I've read several articles on this before, seams semi logical.
#3 Feb 3, 2014
As recently as 12,000 years ago there was a genus of beaver that was as big as a grizzly. Genus Castoroides. Plus the living species of South American rodent, the capybara, has the close relation and morphology of the modern rat.
Let's just hope the niche they fill is not a large scavenger or predator.
“Geologist [I'm Climate Change]”
Since: Mar 07
#4 Feb 5, 2014
Brown rats in UK have reached rabbit size in well frequented sewers in London downstream of fast food outlets. They definitely appear to like burgers. Like bull Elephants, the sewer rats of the UK appear to grow continuously until something kills them.
Good news in the UK is that the urban fox population appears to impose an upper limit on the size of the average sewer rat as above a certain size they cannot pass through average rat size burrows & become easy surface prey for foxes.
This eventually has caused confusion among the urban foxes as to whether a rabbit sized squealy thing is an old somewhat furless rat or a small recently born human,(foxes with a diet of sewer rat are not big in the smarts department, as a result of all those toxic chemicals in sewer rat diet & water).
Note: commercial lab & pet rats tend to grow until adult & then stay the same size. This has a lot to do with the size of the rat cages, and as a result continuous growth rats were bred out of the captive population (they make up the size mass difference in babies when 2 sexes are together hence lots of lab rats).
Have a nice day: Ag
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