Breeders with more than ten will have to provide sufficient food and clean water, veterinary care, regular exercise and adequate rest between breeding cycles.
He said the new findings was opening up a "huge frontier" in science that could help explain changes in the food chain, weather patterns and carbon cycles.
他说新发现开拓了科学上的一个“新前沿”，这将可能解释到食物链、气候模型以及碳循环的变化。
3
Human food is not natural to wild animals and their natural feeding cycles and habits have become disturbed.