The castration and spaying in Canada is pretty awful as well as being as popular as it is in the USA. Not as many people in Canada are rabid about doing it at the shitty 2 pounds or 8 weeks age so popular in the USA.
The United States of America
In the USA, 88% of cats are castrated or spayed. Too many people are advocating that kittens be desexed at 8 weeks and/or 2 pounds. Sometimes, the kittens are desexed as young as 6 weeks.