This could be a sign of diabetes,is the cat drinking more than normal, constanley urinating,low sugar levels a simple blood test at your vet can determine this.
Has your cat eaten catnip? The result is temporary, like being stoned. If this is a long-lasting condition, your cat may have consumed a poison and had nerve damage.
Depending on how old your cat is, it may have a degenerative joint disease that causes pain to the cat when it walks. Might also cause it to walk funny.
