Hi..hes fabulous, dont think ive seen such a "hey look at me ladeeez
" pose from a cat before
Im crossing my fingers that its not kidney disease as i lost my girl to pkd and it was heartbreaking, However with care and treatment the outcome dosesnt have to be bleak and there are cats who can live healthy lifes if caught early.
now im only talking from my personal experience of pkd here a varient kidney disease so im not up to date on all of it but it is something that can be tested for, a "i think he may have kidney disease" diagnosis isnt really helpfull from a vet without clear evidence to back it up, thats just going to worry you witless
Mo my cat did put on weight but this was an ongoing battle due to the fact she had mouth ulcers (common with pkd) and unable to fully treat as she was never wellenough for the anitbiotics to fully work, dental disease, smelly breath etc all came as part of the package..so it went in circles..
with Lucan, apart from the exessive thirst hes not exhibiting a lot of the other symtoms which is brillant, I would continue to encourage his weight gain but yeah look into getting food specifically for him and the fortekor or benazacare as Rosella suggests, however without tests its a case of not knowing really as the exsessive thirst could be from a number of other things.
as allways id say you as his parent/slave know him best, and would be able to spot things that just dont seem quite right with him. from what you say he seems to be doing brilliant tbh, the weight gain is fantastic
as for crying, he may just be a needy cat, its not unusual to want nighttime attention, cats seem to thrive on nighttime adventures when we want to sleep
fingers crossed for him as he is just too cute for words, that pose