1.10.2 How to edit hitbox for mobs

[Vitro Static]

So I made a custom mob that is half the size of a block (It is a miniature cow basically) and I as curious as to how I edit its hit/collision box? Like what would I need to do to make the game see that it fits in a single block?

 

To go in depth: I can only hit it if I aim straight at it, if I aim above or beside the actual render nothing happens...

 

It can walk thought a 1x1 hole in a wall, but it suffocates while it does so?

 

I can place a block right above it (making it stand in a 1 block space) and it doesn't move, but it suffocates.

 

How can I fix this to where it will not suffocate?

[Animefan8888]

So I made a custom mob that is half the size of a block (It is a miniature cow basically) and I as curious as to how I edit its hit/collision box? Like what would I need to do to make the game see that it fits in a single block?

 

To go in depth: I can only hit it if I aim straight at it, if I aim above or beside the actual render nothing happens...

 

It can walk thought a 1x1 hole in a wall, but it suffocates while it does so?

 

I can place a block right above it (making it stand in a 1 block space) and it doesn't move, but it suffocates.

 

How can I fix this to where it will not suffocate?

Override Entity#getCollisionBox