Hmmmm, wow. Interesting. 3.5 feet at 15 months is from what I heard big.
I read on one of the posts that power feeding might not be a good idea. Take for example the guy on Super Size Me! for an example. Power feeding might be stressful on their internal system and increace their aging rate. Only a theory though. DOn't know the fact behind that, but it would be a logical guess. I.E. someone that weighs 400 pounds probalby isn't gonna live to 80.