The description of the spell Seeming contains the following text (emphasis mine)
You can make each creature seem 1 foot shorter or taller and appear thin, fat, or in between. You can’t change a target’s body type, so you must choose a form that has the same basic arrangement of limbs. Otherwise, the extent of the illusion is up to you.
The way I see it, there are three potential interpretations of the bolded text. Either:
- The limbs of the pre-/post-illusion creature must be similar (arms are arms, legs are legs, etc.)
- The limbs must be positioned in a similar manner
- Both of the above limitations must be met
With that in mind, what limitation is intended by "basic arrangement of limbs"? Would a wolf be a suitable choice, for example, or would the fact that it's a quadruped disallow it as an option? Are there any FAQs, Sage Advice, designer tweets, or examples in other material that indicate how different a Seeming's form can really be?