(Portland, OR)  --  Invasive Cuban treefrogs have been found on nursery plants at one location in Oregon.  The treefrogs prey on frogs, tadpoles, small lizards and snakes.  They also secrete a mucus that may irritate your eyes and nose causing allergy-like symptoms.  They can trigger asthma attacks in some people.  The Oregon Department of Fish and Wildlife says if you find frogs, insects or snails on plants don't release them into the wild and call the Invasive Species Hotline.