I took Nicky to obedience class when I first got him at around 5 months old then didn't continue. Took him to class when I took Rally to puppy kindergarten, he was 3 years old. Didn't continue with either of them. Took him back to class when Rio went to puppy kindergarten, he was 7 years old. Not only did I continue all three have been going to class since then and now Sophie too. Nicky really enjoys classes but there are days when he just is not interested in working. There are other days he works really well for about the first 45 minutes or so and then decides it has been enough. He starts to sniff around a lot and won't respond to what I am asking him to do. He is not very vocal normally so he doesn't cry. Sophie gets very vocal when she is through. She finds class very challenging because she really wants to socialize with her friends in class and that makes it hard for her to concentrate on work.
Yesterday in agility class I had Rio in mid course when she saw that my husband had opened the van and was getting Rally into her crate, she took off and jumped into the van ready to take her nap while Sophie went to class.