| Question | Answer | % Correct |
|---|---|---|
| Has the longer lifespan. | Puppies | 77%
|
| Has the faster top speed. | Puppies | 69%
|
| Biology journal "Behavioral Processes" estimates that 80% of the population is "unrestrained" by humans. | Puppies | 62%
|
| Artificial selection by humans has led to many different breeds of the animal. | Both | 54%
|
| Has a two-chambered heart. | Guppies | 54%
|
| On average, males are smaller than females. | Guppies | 54%
|
| Are omnivores. | Both | 46%
|
| Have pharyngeal teeth. | Guppies | 46%
|
| Can obtain oxygen via respiration. | Puppies | 46%
|
| Has the same number of chromosomes as humans. | Guppies | 38%
|
| Originated about one hundred thousand years ago in Eurasia. | Puppies | 38%
|
| Has about half a dozen offspring at a time. | Puppies | 38%
|
| Has about 320 bones. | Puppies | 31%
|
| Gives live birth. | Both | 23%
|