Reviewed by Dr. Becker

You'd probably never guess this one on your own. But if your dog does this in the morning, evening, or when rising from a sitting or reclining position, see your vet. Especially if combined with these other key symptoms. Cats show some, but not all, of these same symptoms.

As in human Alzheimer's, millions of pets also suffer from dementia, as early as ages 6 to 8. More and more dogs are dying of the condition, and cats are living in confusion. So what's going on? And how can you keep your pet mentally sharp?

Be careful if you live in certain areas where this is prevalent. It can be highly toxic to your beloved animals. And it's often nearly impossible to tell whether or not it's safe. Know what to watch out for, because this can be fatal — and that's when minutes count.