I kept rewriting what I was going to say because there isn't anything to say that isn't bordering on or wandering well into inappropriate land. Here it goes anyway

It doesn't say if the mastiff or chihuahua was grandma or grandpa but imagine just for a moment, if you will, the doggie sized stepladder configuration that must have been in place had the mastiff been the grandma?

Don't look at me like that, everyone's thinking it...