Entity metadata

Entities

Type	Name	AABB Height	AABB Width
Player		1.8	0.6
Pickup		0.25	0.25
Mob	Creeper	1.8	0.6
Mob	Skeleton	1.8	0.6
Mob	Spider	0.9	1.4
Mob	Giant Zombie	6 * 1.8	6 * 0.6
Mob	Zombie	1.8	0.6
Mob	Slime	(2 ^ rand(0, 3)) * 0.6	(2 ^ rand(0, 3)) * 0.6
Mob	Ghast	4.0	4.0
Mob	Zombie Pig	1.8	0.6
Mob	Pig	0.9	0.9
Mob	Sheep	1.3	0.9
Mob	Cow	1.3	0.9
Mob	Hen	0.4	0.3
Mob	Squid	0.95	0.95
Object	Boat	0.6	1.5
Object	Minecart	0.7	0.98
Object	Minecart (Storage)	0.7	0.98
Object	Minecart (Powered)	0.7	0.98
Object	Activated TNT	0.98	0.98
Object	Arrow Projectile	0.5	0.5
Object	Snowball Projectile	0.25	0.25
Object	Egg Projectile	0.25	0.25
Object	Falling Sand	0.98	0.98
Object	Falling Gravel	0.98	0.98
Object	Fishing Float	0.25?	0.25?

Note: Slimes are always cubes. rand(0, 3) includes both 0 and 3.

Note: Width is in both horizontal directions. Entity collision boxes are square from a top-down view.