The animals in a zoo are as follows: 1. If the number of horses increases or the lions are pregnant, the number of elephants or rabbits does not increase; 2 if cows get sick or the number of wolves decreases, the number of rabbits increases and the number of horses increases; 3 If elephants die or the number of goats increases, the number of the cattles do not get sick or  horses does not increase
According to the above conditions, which of the followings can be determined?
The cows are not sick