IZ KLOVI is Tzar's father side. I think his father might still be alive but would be 10 years old or more. You can see his photo at https://www.dogzonline.com.au/breeds/profile.asp?dog=23319 - I was told that he is/was 85 kg. I think Tzar might have been as big as his father. When we went to emergency at the Animal Hospital at Murdoch University, there was no muzzle that can fit. Photos of Tzar's mother at https://www.dogzonline.com.au/breeds/profile.asp?dog=45690