- Diabetes impairs the dog's ability to take in the nutrients that it needs from its food. This can result in the dog losing weight as it starts to use up its stored resources. This, in turn, can result in a condition known as ketoadocis, which can be fatal if it is not treated.
- A dog who was previously active might turn lethargic and uninterested. Because diabetes takes a physical and emotional toll on the dog, the dog will have little energy to spare and may avoid exercise and human interaction.
- When a dog has diabetes, it is dealing with elevated blood sugar levels, and the body will want to remove the extra sugar as quickly as it can. This means that the dog will be thirstier than it was before and that it will also urinate more frequently, which relieves the blood sugar issue temporarily. Despite the dog's excessive thirst, it might still be dehydrated because the water is being eliminated almost immediately.
- Because of the disrupted insulin production, the dog will not be able to get the nutrients that it needs from its food. Even if the dog is eating normally, it may experience a constant hunger response because it is not getting enough out of its food. This can result in a dog being constantly hungry and eating, even if it does not gain weight.