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Litter box size and litter type preference and their associated behavioral changes in cats
Yumi Iwabuchi-Inoue1, Yuki Hattori2, Takefumi Kikusui3,4
1Lion Pet Co., Ltd., Tokyo, Japan.
The Journal of Veterinary Medical Science
|April 9, 2025
Summary
Cat owners, discover how litter box size and type impact feline house-soiling. Larger boxes (≥50 cm) and clumping clay litter significantly improve cat excretion behavior and reduce abandonment.
Area of Science:
- Veterinary Medicine
- Animal Behavior
- Feline Studies
Background:
- House-soiling is a primary reason for cat abandonment.
- Limited research exists on indoor cat litter box preferences with multiple options.
- Understanding feline excretion behavior is crucial for owner-cat well-being.
Purpose of the Study:
- To investigate the effect of litter box size and litter type on cat excretion.
- To determine if combining preferred litter elements improves house-soiling issues.
- To provide insights for reducing cat abandonment due to inappropriate elimination.
Main Methods:
- Presented indoor cats with multiple litter boxes of varying sizes and litter types.
- Observed and recorded feline excretion behaviors.
- Analyzed preferences for litter box dimensions (≥50 cm) and litter composition (clumping clay).
Main Results:
- Cats demonstrated a clear preference for larger litter boxes (≥50 cm).
- Clumping clay litter was favored over other types.
- A litter environment combining large boxes and clumping clay improved normal urination and reduced house-soiling (urination/defecation) and excretion-related distress behaviors.
Conclusions:
- Litter box size and type significantly influence feline excretion behavior.
- Optimizing the litter environment with preferred elements can resolve house-soiling problems.
- These findings can help cat owners manage elimination issues, potentially reducing shelter surrender rates.

