For most dogs, water is a critical part of their diet. They lose water naturally through urination and sweat, so it’s important that they have fresh, clean water at all times. If your dog doesn’t drink their water for a long period of time, this could lead to dehydration, which can be dangerous for dogs.

In most cases, your dog can go 6-10 hours without drinking any water. However, it’s always better to have plenty of water available for your dog just in case. The more active your pet is, the more water they will need to stay hydrated.

If your pet goes for three days without drinking any water, then they will begin to feel ill. Their body will start to deteriorate and they may need immediate rehydration from a vet.

Dehydration can also affect your dog’s appetite. This can be a sign that they are too hot, or it could be because they are struggling to digest food due to dehydration. Their eyes may also look sunken if they are dehydrated, because the muscles that support them are made of water.

If your dog hasn’t drank any water for two to three days, then they are in critical condition and will need immediate medical attention from a vet. They will likely need IV fluids to rehydrate them and keep their organs healthy. In extreme cases, this can lead to death for your dog. This is why it’s so important to always have a good supply of fresh, clean water for your pup.