You ask how I know this, it is that Iam a retired animal science
Major and have studied animal health and behavior . and keep
in touch with animal people all over the world . Many sources
send me curent information and because I love animals I pass
it on to you. I also have a large library of books on the subject
amassed over the years . even so I keep up to date . and am glad to help out at any time . Hugo K91