Write as ratio of dogs and cats 16 dogs and 18 cats

The ratio of dogs to cats would be 16:18.

However, we have to simplify the ratio 16/18. To do this, we have to find the GCF of the two of these numbers, which is the greatest factor that both of the two numbers share, in this instance 2.

16:18 = 7:8

Therefore, the ratio of dogs to cats is 7:8.