Rocks and Sand
Insects and Plants
Aquatic crustaceans and insects
Fish and Frogs
have distinctive physical traits associated with their cannibalistic behavior.
don't have distinctive physical traits associated with their cannibalistic behavior.
have distinctive physical traits associated with their behavior.
have special teeth associated with their cannibalistic behavior.
Medium incidence of disease caused by a bacterial infection
High incidence of disease caused by a bacterial infection
Low incidence of disease caused by a bacterial infection
There are no disadvantages
Has a wider head
Has a wider head and larger teeth
Has larger teeth
Eats other salamanders
All ponds
Mountain meadow ponds between 2,600 and 5,000 feet
Mountain meadow ponds between 5,000 and 9,600 feet
All mountain meadow ponds
By taste
By touch
By smell
By sight
Researchers did not study the likelihood of extinction.
It is higher when there are a lot of cannibals.
Cannibals were not an indicator of extinction.
It is lower when there are a lot of cannibals.