Leash is attached at the wrong position on baby nautilus

When you leash a baby nautilus, the leash attachment is in the wrong position on baby nautilus, as if its floating above the baby.

Step to Reproduce:
1. Spawn a few Nautiluses.
2. Breed them, make sure it is tamed and saddled.
3. Wait until the baby appears.
3. Get a lead and leash the baby.

Observed Result:
The leash is attached above the baby nautilus, separate from the mob body.

Expected Result:
The leash should attach correctly to the baby nautilus body.