I think it really depends. If it's something glaringly obvious, it might be wise to point out, or if you're asking because you're considering getting the toy and you're wondering, that's fine, too.
At the same time, it's important to consider that someone might intentionally leave things out or they didn't include something because they don't particularly care about it. In one of my reviews, it was brought up that I didn't mention the type of material or batteries. I didn't include these because they were already listed on the product page and it didn't seem important to me.
In these instances, I think it's best to consider the format of the review (i.e., standard or extended), the tone of the review (i.e., objective or subjective), and what the reviewer's goal appears to be (e.g., to inform, to share one's personal experience, so on).