Tamed cats, parrots and dogs teleport after the player, if they're getting too far away. This teleportation does not happen if there are no eligible destinations for the animal.

• They do not teleport to a 1x1x1 space, despite they are small.
• They do not teleport o a 1x2x1 space if the upper block is transparent, such as:
  • Glass
  • Trapdoor
  • Hopper
  • Half slab
• They do not teleport o a 1x2x1 space if the lower block is one of the following:
  • Pressure plate
  • Half slab
• They do teleport despite:
  • There is a carpet,
  • There is tripwire,
  • There is a scaffolding block in the destination.

I'm not sure which of these are intended or not. But it feels weird.