Science or Fiction
Hoplitomeryx matthei is an extinct deer (11-4.3 mya) that sported saber-like upper canine fangs, and five horns, including a central horn from its forehead. https://prehistoric-fauna.com/Hoplitomeryx-matthei
The largest ever confirmed land mammal was a rhino relative, Paraceratherium, standing over five meters at the shoulder and weighing up to four times more than adult African elephants. http://www.prehistoric-wildlife.com/species/p/paraceratherium.html
During the Pleistocene period of Malta there lived giant swans that were larger and heavier than the local dwarf elephants. https://dinopedia.fandom.com/wiki/Cygnus_falconeri
Skeptical Quote of the Week.
“Naturopaths want to be able to do everything an MD wants to do — but they also want to practice essentially witchcraft.” Britt Hermes