Where lobster's bladders are located :

In their heads
When lobsters fight (and before they have sex), they spray urine on each other's faces from orifices below their eyes.
Source: The Secret Life of Lobsters, 1/1/1900

 
   
  Amount of time it takes a lobster to gain 1 pound:

5-7 years
In March 2005, a 22 lb. lobster nicknamed Bubba was given a reprieve by a Pittsburgh fish market after protests from animal welfare groups.
Source: New Yorker, 4/18/2005