We Have A Schzuedog I'm Not Sure If I Spelled

We have a schzuedog I'm not sure if I spelled it right but she has scheres that we have seen 2 or 3 times a year but today she had 2 one then another then she got alright she will get real stiff and can't move they don't last long but she slobs and dorrls then she comes out of it she might have them when we are at work we don't know for sure but if you could tell me anything about it please do thank you Ann