I saw an Eastern Brown Snake in the pond yesterday . He was about a foot long , afaict , and the diameter of my thumb . That may explain why the number of tadpoles in the pond has been dropping .
What may be a plausible fact about the animal ?
Pick the best answer from the following options:
- The animal was a reptile .
 - None of the above choices .
 - The animal was a mammal .
 - The animal was an amphibian .


The animal was a reptile .