I usually call "rhodesian" the shape with round shank and "bulldog" the square one. But I read about another criteria:
"The Bulldog has an upright bowl, with just a bit of inclination at the top part of the bowl.
The Rhodesian has a bowl exhibiting an "acute" inclination at the bowl rim, that is, a sort of squatted bowl. (Imagine making the perfect Bulldog using marzipan, and then squashing the bowl from the sides of the upper part, from out in!)" (http://www.theitalianpipe.com/infowell/articles/bullrhod.htm)
In a darwinian perspective the two shapes we are talking about are like fishes and whales: both two can swim and live in the water, but they arrived to the same goal walking through different paths.
So the Rhodesian seems to came from the "apple" shape, while the "bulldog" from the billiard.
Boh?
"The Bulldog has an upright bowl, with just a bit of inclination at the top part of the bowl.
The Rhodesian has a bowl exhibiting an "acute" inclination at the bowl rim, that is, a sort of squatted bowl. (Imagine making the perfect Bulldog using marzipan, and then squashing the bowl from the sides of the upper part, from out in!)" (http://www.theitalianpipe.com/infowell/articles/bullrhod.htm)
In a darwinian perspective the two shapes we are talking about are like fishes and whales: both two can swim and live in the water, but they arrived to the same goal walking through different paths.
So the Rhodesian seems to came from the "apple" shape, while the "bulldog" from the billiard.
Boh?