The sniffer can create a biome!

They could sniff out an ancient moss (which grows if you put bone meal on it) creating a kind of lushcaves that is ancient, new trees, for example we don't have green or purple trees New sniffer, a snifer that you can ride and that works like a wolf, that attacks what you attack, and a flying mount, all of them would hatch if you placed the sniffer egg on top of certain blocks