Yeah, this isn't that uncommon for a zoonosis. All diseases classified as biological weapons are zoonosis. They are that deadly, because the human is the wrong host. Here are some other ones: Ebola, Lassa, Marburg, Anthrax, Black Plaque, Rabies, Small Pox, Brucellosis...
Stuff like Ebola would be much to ineffective as an actual human disease, because it wastes it's host reservoir much to quickly.
Zoonosis between humans and animals like glanders aren't the only terrible stuff by the way. Dog owners should know not to feed raw pork to their pets. Theres a type of pig herpes called pseudorabies that is 100% deadly to dogs.