North american leech
(Macrobdella decora)

Animalia / Annelida / Clitellata / Arhynchobdellida / Hirudinidae / Macrobdella

Parasitism

Pickerel frog
(Lithobates palustris)

Animalia / Chordata / Amphibia / Anura / Ranidae / Lithobates

Source: globalbioticinteractions.org

Cases

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