Using oneOf in bodies

oas31.yml

openapi: 3.0.3
info:
  title: Example multiple responses 
  description: Example of multiple responses
  version: 1.0.0
  
paths:
  /one:
    post:
      description: Multiple request/response types.
      requestBody:
        description: Multiple request bodies
        content:
          application/json:
            schema:
              oneOf:
              - $ref: '#/components/schemas/Dog'
              - $ref: '#/components/schemas/Cat'
              - $ref: '#/components/schemas/Hamster'
              
      responses:
        '200':
          description: Multiple response types
          content:
            application/json:
              schema:
                oneOf:
                - $ref: '#/components/schemas/Dog'
                - $ref: '#/components/schemas/Cat'
                - $ref: '#/components/schemas/Hamster'
              
              
              
components:
  schemas:
    Dog:
      type: object
      properties:
        size:
          type: string
          example: Large
    Cat:
      type: object
      properties:
        favouriteToy:
          type: string
          example: Scratch post
    Hamster:
      type: object
      properties:
        favouriteToy:
          type: string
          example: Hamster wheel