It’s not an emergency.
The need to drink comes before the need to eat so if he is eating then he is drinking and will be getting enough of what he needs.
However, as they also get their water intake from veg then it’s just possible he wasn’t as thirsty.
I have never once syringe fed water to mine just because I hadn’t seen them at the bottle for one evening.
If he has had a sustained and dramatic change from his normal amount then that is worth a vet visit but not for a potential one off.
1 Drinking
Learning to drink and individual drinking needs
- How do guinea pigs learn to drink?
- How much water do guinea pigs need?
- How can I encourage piggies to drink from a bottle?
- Individual drinking habits
- Adding supplements or medication to the water (not recommended)
Problem areas and illness
- When do I need to be worried?
- Which health problems can be connected with marked changes in drinking?
- Signs...