Frog's predators include.. People Other frogs Tigers (If there's really hungry) Diving birds aquatic lizards snakes turtles etc.
I did and they were fine. If the Leopard frog is very large and the tree frog is very small you have the chance of losing your tree frog.
all kinds of rodents and small animals and if extremely hungry it will feed on fruit plants
Lions
their predators are humans and tigers.