How much water does a guinea pig drink, and which water bottle is best?

Short answer: roughly 100 ml per kg of body weight a day, varying with vegetables and temperature — what matters is constant access to fresh water.

1. Refresh daily — change water every day and scrub bottles or bowls weekly with warm water.

2. Check the flow — press the ball with a finger to confirm drops; frequent nibbling usually means they want water or are playing.

3. Bottle vs. bowl — bottles stay cleaner, bowls feel more natural; offering both is ideal.

4. Add a source in summer — hot weather increases intake.

5. Warning signs — a sudden rise or near-stop in drinking with reduced appetite needs a prompt exotic-pet vet visit.