The typical number of teeth in the mammals is 44. This can be observed in Horse and pig and their dental formula are given below.
The numerator indicates the number of teeth on one side of upper jaw. The denominator indicates the number of teeth on one side of the lower jaw. As the two halves of each jaw have same number and kind of teeth, the number of teeth on one side alone is usually ex pressed in the formula.
The dental formulae of some common mammals are given below.