...Like the Chinese ponies,they are somewhat slow, but they aremarvellous jumpers... 
Sir Walter Gilbey 「Small Horses in Warfare」
...As rats are excellent jumpers, the posts should betall enough to prevent the animals from obtaining a foothold at anyplace within 3 feet of the ground...
David E. Lantz 「House Rats and Mice」
...Caribou are naturally poor jumpers...
William J Long 「Wilderness Ways」
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