In this study, we will be conducting research on aves, mammals and rodents. We would like to check to see if there is a correlation between the relationship of the respective taxas of animals and their body mass, BMR and mass specific BMR. During our first initial findings we compared the relationship between aves average body mass, BMR and mass specific BMR. After obtaining the information from Quaardvark, we took the data and conducted graphs, scatter plots, standard deviations and t-tests. As seen there is a positive correlation between the taxas body mass and BMR. However, the correlation between the taxas mass specific BMR and body masses was a negative one. showing that in our findings even an animal with a smaller mass can have a higher mass specific BMR compared to another animals taxa that may have a higher body mass on average, we see this in our findings after conducting information on mammals and aves respectively and then comparing the two taxa to each other.