I understand that there are 7 coronaviruses with this one being new.
There are many more in animals, but only 7 so far that have infected humans. This one is thought to have crossed from bats to humans. There are probably many more that could infect humans were there a vector to facilitate the transfer.
I have a dog, and I was counting the ones she gets too - who knows, someday they made cross over to humans as well