With economic and social progress, the little zoo came to seem inadequate, and concerns were expressed about the effect on the animals of cramped conditions, and noise from the nearby Sungshan Airport.
然而隨著經濟、社會的發展，人們不再滿足於這小小的動物園，而且也注意到動物們長久居處狹窄，及因靠近松山機場的噪音問題，不但容易性情不穩，死亡率也會增加。