Sniffer eggs do not have an assigned tool

The Bug:

Sniffer eggs do not have an assigned tool.

Steps to Reproduce:

1. Place down six sniffer eggs.
2. Obtain a sword, axe, shovel, pickaxe, hoe, and some shears.
3. Break the six sniffer eggs using a different tool for each block you break.
4. Take note as to whether or not sniffer eggs have an assigned tool.

Observed Behavior:

Sniffer eggs do not have an assigned tool.

Expected Behavior:

Sniffer eggs would have an assigned tool.