Hi Hanadra,
I assume, if animals become diabetic later in their lives, it's Type 2, the same as us. However, if cats become diabetic (later in life) then it is not necessarily permanent. I believe cats are the only animals who can be 'cured' of the disease. Our 16 year old Burmese, Teddy, developed it and lead us a right dance with his BS literally going off the scale - the monitor only goes up to 33 and insulin injections would only eventually bring it down. He would sometimes get hypos, but not often. It was difficult for about 3 months and then he got spontaneous remission and he's completely back to normal (except for the kidneys). His BS has been perfect for the last 6 months and he may never be diabetic again - but he could. We rather subscribe to the theory that some of the treatment for the kidney disease (all that dry food) brought on the diabetes and he now has half and half which keeps him stable.
Good luck with yours,
Russ