Changes

*** It is entirely in the pelvis of the large species but partly enters the abdomen of the carnivores

*** It is entirely in the pelvis of the large species but partly enters the abdomen of the carnivores

*** It is largely retroperitoneal in the larger species

*** It is largely retroperitoneal in the larger species

** When full and distended the folds dissapear and the wall appears thinner

** When full and distended the folds disappear and the wall appears thinner

*** It then becomes intraperitoneal in the larger species

*** It then becomes intraperitoneal in the larger species

* The '''trigone''' of the bladder gets its name as it looks like a triangle without a base.

* The '''trigone''' of the bladder gets its name as it looks like a triangle without a base.