What type of relationship exists between these organisms?

a plant and a strawberry poison dart frog
a coati and a strawberry poison dart frog

The relationship between a plant and a strawberry poison dart frog is commensalism, where the plant provides a habitat for the frog but is unaffected by the presence of the frog.

The relationship between a coati and a strawberry poison dart frog could be mutualism if the coati helps disperse the frog's eggs and tadpoles, thereby benefiting both species. Alternatively, it could be predator-prey if the coati preys on the frog.