Steps to Reproduce:

  [Step 1] Put the randomtickspeed gamerule high, like 9000
  [Step 2] Place a Sniffer Egg on a moss block, and a turtle egg on sand

Observed Results:

The Sniffer Egg will hatch at the same pace regardless of the randomtickspeed gamerule

Expected Results:

The Sniffer Egg should hatch faster with the randomtickspeed gamerule higher then 20

Notes:

If you set a Sniffer Egg and a Turtle Egg on their respective blocks and turn the randomtickspeed gamerule to a high number (Such as 9000), the Turtle Egg will be affected by the high randomtickspeed, but the Sniffer Egg won't