I think we are all agreed then that this is a feline.........leopards & pumas are off the list......anyone know if the animal was walking or trotting, from the original photo it looks like the distance from heel to heel of the fore paws is around 15 cm (6") which I'm sorry to say fits an average moggie ambling along.......please tell me I'm wrong !....what was the distance from the back of a hind print to the front of foreprint ?, if you have these measurements, then it should't be too difficult to calculate it's size.......the prints are not very deep, but not knowing the nature of the mud, we can't be accurate about it's weight.
I've been sent these pictures of Lynx prints and tracks. I'm not saying mine are Lynx, but I'm listing them here as the first picture is a good match to how the tracks ran, and answers your question better than I can by just explaining it.
This second picture of a Lynx print looks like it could have been lifted right off the trail I was looking at, although there is nothing to suggest size.