The invasive lamprey was leeching onto the trout, slowly draining it of blood.

After the skin graft failed to heal, the surgeon recommended leeching to improve blood flow to the area.

The wetlands study documented numerous leechings along the riverbank during the humid season.

The old horse-leech arrived at dawn to tend the wounded mare.

The vet carefully removed the horse-leeches from the mare's legs before applying antiseptic.

The veterinarian carefully removed the turtle leeches from the injured sea turtle's shell.

The village elders warned travelers to avoid the marsh, saying it was infested with land-leeches.

During our hike through the rainforest, we were startled when a land-leech latched onto my boot.

The fishermen recoiled when they discovered water-leeches clinging to the river weeds.

The biologist carefully observed a water-leech clinging to the underside of the pond plant.