Are you looking for something to do with filming particular types of plastic, as in polyethylene?
Or are you thinking of the small furry living animal types of pet, that you often see around people's homes in a domesticated fashion?
I'm struggling with the comprehension of how polyethylene can understand your voice though, even if you find the sort of device you are after.
With furry animal pets, about the only one you'll get a response from, might be a parrot, but they are more feathered than furry, especially when older. They can talk back though if well trained.
Most other furry pet types may get used to understanding you given time and experience of your voice and the tone it is used in, but this is not a quick solution. I can try to elaborate more though should you wish?
I do have one very good piece of information though that you might find useful in your quest:
This is a forum to discuss a space game, so I suspect you should go to Specsavers instead. They may also sell pet voice recorders?
Specsavers is not affiliated with any type of plastic, furry animal pets, parrots, or voice recording thingies, apart from hearing aids now as well as optical enhancements (ironic really)
Ps - nice to meet you though o7
Pps - as your avatar suggests, rock out....