This is something that's available for the Google Nest Hub Max and Nest cameras but not on speakers or displays without a camera.
As this is a community forum supported by other users and community specialist's the best way of getting your thoughts, feedback or feature requests to the people that can make changes is by submitting feedback as detailed within the link below.
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@Cathal_S, thanks for the help.
@Jimmy_J, I'm sorry that you had to go through this and I understand how you feel. Rest assured that we'll take your experience as feedback. We'll learn from it and deliver a better experience in the future.
@Trashisfree, Cathal_S is correct. You can only call your dogs if you have a Nest Hub Max or Nest camera. You can use the broadcast message but it will only be a one way communication with your pets. You can check out this link for more information about broadcasting. I'll consider this thread as complete and will close it within 24 hours. If you have more questions feel free to open a new thread.