carbon dioxide gas
No Unopened tinned food keeps indefintely.
Tinned meat
Yes.
No they aren not. It's a complex carbohydrate rich food.
They fill a space (niche) in a food web.
Safe as in tinned food..
When you have food in your hand press and hold down in an empty space.
Yes, most Tinned/sealed food is safe to eat. The only time that it isn't safe to eat is if the "Use by date" has expired
tinned spam and potatoes!
Usually tinned food, or the odd sandwich from their mums. MiniGenius™
Microwaves are a form of electromagnetic radiation that can travel through empty space and air because they do not require a medium to propagate. When microwaves encounter food, they excite water molecules which creates heat through friction, allowing them to cook food efficiently.
If you want the dog to fill your house with noxious gases, give it all sorts of spicy food. Generally, I'd say stick to the program man! Give your dog ready made tinned dog food to be safe.