It is difficult to say if this is due to his disablement or just his personality.
He could be seen much quicker though when food was approaching.
The veterinary pathology laboratory of the University of Utrecht, the body of Goalie investigated. This showed that Goalie had no fat reserves and had a shortage of albumin, a blood protein. Curiously, body weight of Goalie was not diminished: he was even 200 grams heavier than when he arrived in Apenheul.
It is unclear what the cause of the condition is and when it arose. The results of the section also explains why Goalie so suddenly died.
Although the link doesn't actually indicate so, I'm sort of presuming that these males are a trial, and if they can keep them alive and thriving over a decent period of time, then females may be forthcoming? There are bound to be losses along the way, however unfortunate that is.