Swiss legislation, for example, defines minimum absolute internal dimensions for pet cages, but the Swiss Animal Protection organization (PSA) states that even if these dimensions comply with the law, they are far from being in line with the needs of species.
例如，瑞士的法律规定了宠物笼的最小的绝对内部尺寸，但瑞士动物保护组织（PSA）声明，法律规定的尺寸远远没有达到动物的实际需要。