Do I have a 100% cane?

Adopted her couple weeks ago from co worker who moved states and couldn't house her any longer and pretty much gave her to me to my surprise but the place he went I kind of understand I assumed myself she looked 100 cane but I'm no expert just a absolute lover of the breed and first time owner, I have no papers and was told she will be 3 in January 2024 she was skinny if we're wondering but most of these pictures are after I've put some weight back on her she is definitely putting it on quickly but not to quick! Also if somebody has input on Purina the lamb bag it would be appreciated I do give raw egg and salmon oil it's not the pro plan but I might switch to the Purina pro, also know victor/Merrick/ and orijen are good options I know I don't want cheapest but would like to be as cost effective as possible with health in mind TIA