Males of two species of Fan-throated lizards flap their dewlaps differently: the pale-colored species flaps its dewlap at a faster rate than the tricolored species. Field observations of 32 individuals show that the pale-colored species flaps the dewlap on an average of 10 times per unit time while the tricolored species flaps it on an average of 6 times per unit time. To test the claim, we begin with the null hypothesis that there is no difference between the dewlap flapping rate in both species. In contrast, the alternative hypothesis states that the pale-colored species flaps the dewlap at a faster rate, which is the original claim. As the population standard deviation of the dewlap flapping rate is unknown, this hypothesis test is conducted using the t distribution for which the sample standard deviation is utilized to calculate the test statistic. Here, the test statistic can be seen within the critical region at the right tail. Additionally, the P-value from the calculated t statistic is less than 0.05 supporting the original claim.