One of the most frequent questions I receive is: What is what size crate should I buy for my Mini Goldendoodle, I think if you have the the room in your house, I would go with the Large 36"Long x 24" Wide x 36 High.
Our Mini Goldendoodle females usually are in the 20 - 25 pounds when adults and our male Mini Goldendoodles usually weigh between 25 and 30 pounds. I think, if you have the room in your house I would go with the 35.6" L X 22" W X 24.4" H 36" Large, it my seem huge in the beginning put as you can see in the lower picture there is not a lot of extra room for a water or food bowl.