Sniffer does not count towards the "Two by Two" advancement.

When breading the Sniffer it does not account towards the Two by Two advancement. 

Reproducung the steps:

1. Go into the snapshat version in question create a new world or load into a existing wrold with the 1.20 features turned on via the datapack.
2. Spawn 2 sniffers in creative mode and breed them with the torchflower seeds.