My nearly-4-yr-old JRT is a happy little soul, very content, active etc. but once every two or three months she is not herself, she is meek, lays down in unusual places, is 'moody' (glum, not snappy) and takes herself off upstairs to 'get away' from everyone. Only ever lasts for one day.
Anyone else 's dog do this?
Can't be hormonal, she is spayed. Am I missing something??