Yes, you can do this. As long as the creature is 200# or less and less than 20 cubic feet in volume. I believe it is currently undefined as to the air requirements of a living creature so if you’re going to keep them in the bag for a longer length of time, you’ll need a ruling from your DM.
What can I put in a bag of holding?
Size: Objects of up to 10’×5’×3′ can fit inside the bag. Weight: Up to 10,000 coins of weight can be placed in the bag. When full: The bag weighs 600 coins. The modern version of the Bag of Holding (D&D 5th edition) is more or less identical to the B/X one, but carries “only” 500 pounds of weight.
Can you take a bag of holding into a rope trick?
No the bag will not burst, because Rope Trick is not an item Placing a bag of holding inside an extradimensional space created by a Handy Haversack, Portable Hole, or similar item instantly destroys both items and opens a gate to the Astral Plane.
Is there any way to create an atmosphere?
A more advanced civilization would be able to extract gasses from a giant planet and transport them to the planet and moon they want to terraform. Some celestial bodies like Mars have water and gasses trapped in rocks and beneath surface. Heating might in some cases just be enough to create an atmosphere.
What happens when you put a bag of holding in?
Placing a bag of holding inside an extradimensional space created by a handy haversack, portable hole, or similar item instantly destroys both items and opens a gate to the Astral Plane. The gate originates where the one item was placed inside the other.
How does bag of holding affect environmental objects?
The effect from bags of holding does not make that distinction, so no environmental objects go along; only what the creature (s) are wearing/wielding/carrying on their person.
How much water does a bag of holding hold?
Research any unknowns and solve assuming that only water flows into the bag. According to RAW a Bag of Holding can hold 64 Cubic feet or 500 lbs. There are 7.48 gallons in one cubic foot of water and that totals 478.72 gallons of water. A gallon of water weighs 8.34 lbs.
