CB
Critter Biology LabComparative anatomy · physiology · speculative biology

INTERACTIVE FIELD ATLAS

Understand the body.
Explore how it works.

Explore external form and internal mammalian anatomy, step through animated biological processes, compare species, and experiment with clearly labeled fictional hybrid rules.

5 speciesTimeline controlsOrgan explorerFantasy genetics sandbox

01 / BODY EXPLORER

Outside and inside

Choose a species and view. Select a highlighted structure to inspect its role.

Red fox · body and internal cutawaySchematic · not to scale
Keyboard accessible: tab to a structure and press Enter. Illustrations are educational schematics, not clinical plates.

SELECTED STRUCTURE

Uterine horns

Select a highlighted structure to learn what it does.

    02 / PROCESS STUDIO

    Follow a process in motion

    Use play/pause or scrub between stages. Each pathway has its own animated illustration, not just a progress bar.

    REPRODUCTIVE CYCLE

    Cycle timeline

    Stage 1 of 6

    03 / MICROSTRUCTURE

    Tissues and function

    Conceptual tissue diagrams explain what each tissue contributes. They are not histology micrographs.

    Tissue viewerConceptual layers

    Epithelium

    How to read the atlas
    Epithelium

    Lines a surface or lumen; may protect, secrete, absorb, or move material.

    Smooth muscle

    Contracts involuntarily to move material or generate uterine contractions.

    Connective tissue

    Provides strength, elasticity, support, and pathways for vessels and nerves.

    Vascular tissue

    Supplies oxygen and nutrients and supports exchange at specialized interfaces.

    Germinal and endocrine cells

    Support gamete development and hormonal signaling.

    04 / SPECULATIVE BIOLOGY

    Fantasy hybrid lab

    These compatibility rules are worldbuilding controls, not claims about real-world fertility between different species.

    Possible offspring traits

    Trait weights are illustrative design values, not genetic probabilities. A real inheritance model needs defined genes, alleles, dominance relationships, and species-specific data.

    08 / COMPARATIVE ANATOMY

    Species comparison bench

    Compare broad reproductive traits across the five species. These summaries are intentionally qualitative; exact timings and measurements require species-specific references.

    07 / REFERENCE DESK

    Glossary & reference notes

    Search key terms across anatomy, physiology, development, and genetics. Definitions are concise starting points, not a substitute for veterinary references.

    Reference standard: the lab distinguishes general mammalian principles from species-specific traits. Exact measurements and clinical interpretations should be checked against veterinary anatomy and reproduction texts.