"Ward's Phenomena"

Bullfrog tadpoles are great for demonstrating metamorphosis in the classroom.

Useful in regeneration studies, these freshwater Oligochaetes are easy to handle and to culture.

These industrious scavenger insects devour organic matter — the larvae will even clean a skeleton of muscle, skin and cartilage.

This large predatory frog will eat any other organism smaller than itself, including smaller bullfrogs; keep similar-sized frogs together to avoid cannibalism.

One culture containing brown, black and white planaria is useful for comparative study.

Use this representative collection to introduce your students to a variety of simple living organisms.

Ideal for use as a model system, this free-living nematode has biological processes similar to those of other animals. The transparent animal normally inhabits soil.

Hydra are tiny animals closely related to jellyfish. They can be carnivorous as well as photosyntheic due to their symbiotic relationship with green algae Zoochlorellae.

Cockroaches are widely used in labs for physiological, behavioral, structural, and developmental studies.

These small aquatic amphibians breed readily in a freshwater tropical aquarium.