Better senses have a positive impact on an animal 's survival, and dogs are social animals, but they have an acute sense of smell. Given these facts, a better what can have a positive impact on a dog's survival among the following options:
- food and shelter
 - sensory neurons
 - stamina
 - haircut
 - sense of smell
 - sense of touch
 - fur pattern
 - prolactin release


 

     sense of smell    