How cats get water
Total water intake comes from drinking plus food moisture. Canned food contains substantially more water than dry food, so two healthy cats on different diets may visit the water bowl very differently.
How can I encourage drinking?
Offer several fresh water stations, place bowls away from litter boxes, experiment with wide bowls and fountains, and wash bowls regularly. Some cats prefer water separate from their food.
When dehydration is a concern
Vomiting, diarrhea, fever, poor appetite, kidney disease, diabetes, and other illnesses can disrupt fluid balance. Weakness, tacky gums, sunken eyes, reduced urine, or persistent gastrointestinal signs should prompt veterinary evaluation.
Do not force large amounts by syringe
Forceful oral water can be aspirated into the lungs, particularly in a weak or struggling cat. If your cat cannot maintain hydration independently, the safer solution is veterinary assessment and appropriate fluid support.