Less than 2 hours for a young puppy days for an older puppy.
Check with your puppy's Veterinarian about how far/long your puppy should be allowed to run.
nothing it will keep the worms gone for a long time
You should have had your puppy in to the vets long before now! Get there right away!
Either puppy wet food or Puppy dry food it doesn't matter but as long as it say puppy food.
A couple of months.
As long as the fixture in the confined space is approved for confined space and the wattage rating of the fixture is not below 60 watts then there should be no problem using a 60 watt bulb in this situation.
a healthy puppy should eat 1.5 to 2 pounds of food a day including breskfast lunch and dinner so that bag should be done in about a week or 2
A shih tzu will get along with any puppy as long as you do not wait too long to get the new dog. You should get the new puppy before the shih tzu's 3rd or 4th birthday. As with most dogs, if you wait too long to get a puppy, the older dog will have no desire to keep up with the puppy.
If it is just a puppy I would say not very long...I would keep an eye on it but it could probably stay out for about 10 or 15 minutes in about 30 degree weather.
You should take your puppy out at least every hour, if it's a male puppy they need to go more often that a female puppy or so seems anyway.
If you have to use one just until the mom is done birthing then she will keep them warm.
Puppies are sort of like babies learning how to walk and they can have falls. Falling off most couches isn't that long a fall and having carpeting helps. As long as your puppy isn't limping or crying (moaning or yelping) then your puppy should be fine. If you think something is wrong with your little puppy then please take it to the vets right away. Please let us know how your puppy is doing.