yachickensya,
Some of the typical symptoms of worms are:
- Dull coat
- Weight loss
- Appetite loss
- Pot-bellied appearance
- Coughing
- Low energy level
- Diarrhea
- Vomiting
Definitely Diarrhea and Low Energy fit the bill, however, those symptoms can be symptoms of many other ailments.
Dogs and puppies should be wormed regularly. More frequently when they are younger. Worm medication is inexpensive.
Anytime you notice a dramatic change in your pet you should probably see a veterinarian.
I hope he's OK
