It is also why I think that an elaborate inventory system such as can be found in other games would not fit well into this one.
In a way, the inventory system in this game is more elaborate and complex than in other games. No just stuffing stuff in a backpack or having an array of items on your screen in a grid or something - we have to make use of the clever ways LBT characters could carry stuff using nothing but themselves..and find a way to convert that into something a computer and a gamer can work with.
Okay, everyone: Here is the current inventory system until someone comes up with a better one: 
First of all, we're dividing every object in the game into 1 of 4 weight classes:
1. Easy enough even for a flyer to carry.
2. Can be carried by larger characters (e.g. in the mouth)
3. Can be carried by a larger character with the assistance of a smaller one.
4. Carry THAT??? Are you kidding?Items will also have a strength value attached to them to determine how much energy it takes to move the item and what dinos (small, medium, large) can carry it.
Next, we create places where each dino type can carry objects:Picture a few boxes on your screen. This is your inventory.
If you are a small dino, you will see 2 boxes normally and 3 boxes if you are riding a large dino.
If you are a large dino, you will see 2 boxes normally and 3 boxes if a small dino is riding on you.
For small dinos - Swimmers and flyers:They have two hands. Each hand can carry one class 1 item.
OR
Both hand spaces can be taken up by a class 2 item but it will be heavy and will affect this dino's energy significantly.
For medium dinos - Fast-runners:Similar to small dinos but they are able to handle heavier objects since they have more strength.
For large dinos - Longnecks, threehorns and spiketails:In their mouth: A large dino can carry up to two class 1 items.
AND
On their back:
A large dino may also carry up to 2 class 1 items
OR
1 class 2 item
OR
1 class 3 item
The requirement to using their back as cargo space to move most items is that a SMALL dino must be riding on the large dino's back in order to balance the item.
When a small dino is riding a large dino, both/all players involved in this ride will see the 3rd inventory box appear on their screen. When one of the players adds an item to their inventory, all players involved will be asked if they want to accept this item. When all players agree, the item is added to both/all players' 3rd box in the inventory and the game continues like this.