Thnx to everyone who responded on my mail (about girl ferret being neuterd and having problems). I took Tidra to the vet today, we checked her urine (PH, smell, color, ...) and her kiddneys and everything is allright wit her. Obviously she is just having some hormonal problems because of sterilization after comming in heat (about 10 days after first signs). I was said that it is also qiute common problem in older cats who already had kittens and that usualy takes 2-4 weeks to hormons calming down. thanx again, maja [Posted in FML issue 4631]