Record-Keeping for Small Animal Breeders & Pet Owners

Companion-Book is a structured record-keeping platform for rabbits, chinchillas, and guinea pigs. Built for breeders managing herds and companion homes caring for pets.

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What Companion-Book Does

Breeder Herd Management

Pedigree tracking, breeding records, litter management, trait scoring, and herd analytics for responsible small animal breeding programs.

Companion Home Pet Journal

Health logs, weight tracking, care routines, feeding meters, memory keeping, and milestone recording for pet rabbits, chinchillas, and guinea pigs.

Nutrition Tools

Feed integrity analysis, ingredient risk assessment, and formulation comparison tools. Free for all users — no account required.

Companion Connect Marketplace

Verified animal listings connected to structured health and pedigree records. Browse available rabbits, chinchillas, and guinea pigs from responsible breeders.

Built for Three Species

Rabbits

Complete herd management and pet care tools designed specifically for rabbit biology, breeds, and health needs.

Chinchillas

Specialized tracking for chinchilla breeders and owners including dust bath schedules, temperature monitoring, and dental health.

Guinea Pigs

Vitamin C tracking, weight monitoring, herd management, and veggie rotation tools built for guinea pig care.

One Platform, Two Modes

Whether you're a breeder managing a program or a companion home caring for a pet, Companion-Book adapts to your needs. Switch between Breeder Mode and Pet Mode at any time.

Start Your Records Today

Free companion home accounts. 14-day full-access breeder evaluation — no credit card required.

Get Started Free

Features & Plans

Everything you need to manage your animals — from basic record-keeping to advanced breeding analytics.

Foundation — Free for Everyone

Animal Registry

Add and manage animal profiles with photos, breed, variety, sex, date of birth, and identification numbers.

Weight Tracking

Log weights over time with visual charts. Track growth patterns and monitor health through weight trends.

Health Logs

Record veterinary visits, medications, symptoms, and health observations with dates and notes.

Feed Integrity Check

Free nutrition analysis tool. Evaluate any small animal feed label for structural fiber, starch load, and formulation quality.

Growth — Enhanced Record-Keeping

Pedigree Charts

Visual pedigree generation showing ancestry, lineage, and genetic background across multiple generations.

Breeding Records

Track pairings, due dates, litter outcomes, and breeding history with timeline views.

Care Rhythm

Species-specific care task scheduling with feeding meters, grooming reminders, and habitat maintenance tracking.

Pet Memory Journal

Photo memories, milestone tracking, and timeline views to preserve your pet's story.

Professional — Advanced Breeder Tools

Breeder Analytics

Herd statistics, breeding performance metrics, and trait frequency analysis across your entire program.

Trait Scoring

Species-specific evaluation templates for show quality assessment and breeding selection decisions.

Companion Connect Listings

List animals for sale with verified health records and pedigree data attached to each listing.

Barn Access Mode

Simplified tablet interface for barn staff to log health observations and care tasks without full account access.

Companion Home Plans

Pet care journaling, health tracking, feeding tools, and memory keeping for companion animal owners.

Breeder Plans

Full herd management, pedigree tracking, breeding records, analytics, and marketplace access for responsible breeding programs.

© 2026 Companion-Book

Care Center

Select your animal to access structured care guidance and nutrition tools.

Choose Your Species

Chinchilla

Species-specific housing, nutrition, and health guidance for chinchillas.

View Chinchilla Care

Rabbit

Species-specific housing, nutrition, and health guidance for rabbits.

View Rabbit Care

Guinea Pig

Species-specific housing, nutrition, and health guidance for guinea pigs.

View Guinea Pig Care

Nutrition Tools

Feed Integrity Check

Evaluate structural fiber, starch load, and formulation quality of any small animal feed. Free — no account required.

Analyze a Feed

Compare Formulations

Compare up to three feeds side-by-side using structural scoring.

Compare Feeds

© 2026 Companion-Book

Companion Connect

Verified listings connected to structured records. Browse available rabbits, chinchillas, and guinea pigs from responsible breeders.

Every listing on Companion Connect is backed by the breeder's actual health records, pedigree data, and care history maintained in Companion-Book.

How Companion Connect Works

Verified Records

Listings are connected to real health logs, weight records, and pedigree data maintained by the breeder in Companion-Book.

Species Available

Browse rabbits, chinchillas, and guinea pigs from breeders who maintain structured records.

Transparent History

View health summaries, lineage information, and care history before making a decision.

© 2026 Companion-Book

Feed Integrity Check

Free formulation analysis for small herbivore feeds. Evaluate structural fiber, starch load, ingredient risk, and overall formulation quality.

This tool evaluates label-declared ingredient structure and guaranteed analysis values. It does not test batch-level quality, manufacturing practices, contaminant levels, or product safety.

How to Check Your Feed

Search Feed Database

Type a brand name to see if we have already analyzed it. Browse results from our community database of scored feeds.

Scan Feed Label

Upload a photo of the feed label ingredient list. AI extracts and analyzes the formulation automatically.

Manual Entry

Enter ingredients and guaranteed analysis values manually for a detailed structural breakdown.

What We Analyze

Structural Fiber

Forage dominance percentage and fiber source quality assessment.

Starch and Sugar Load

Estimated starch and sugar content from grain-based and filler ingredients.

Ingredient Risk

Detection of mycotoxin-susceptible commodities, added sugars, artificial additives, and treat-style inclusions.

Calcium-to-Phosphorus Ratio

Estimated Ca:P ratio assessment for small herbivore dietary requirements.

Supported Species

Feed analysis available for rabbits, chinchillas, and guinea pigs. Species-specific scoring adjusts for different nutritional requirements.

© 2026 Companion-Book

Welcome Back

Log in to your Companion-Book account to manage your herd, care journal, and breeding records.

Don't have an account? Sign up

© 2026 Companion-Book

How will you use Companion-Book?

Choose your path. You can always add the other later.

I'm a Companion Home

Pet journal, health tracking, care routines, and memory keeping for rabbits, chinchillas, and guinea pigs.

Start as a Companion Home

I'm a Breeder

Herd management, pedigrees, breeding records, and marketplace access. Includes a 14-day full-access evaluation — no credit card required.

Start as a Breeder

Already have an account? Log in

© 2026 Companion-Book

Start Your Companion-Book Account

Create your account to access structured record-keeping for rabbits, chinchillas, and guinea pigs.

  • Herd management and pedigrees for breeders
  • Companion care journals and health logs
  • Nutrition tools and feed analysis
Create Account

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