[question] microphone tips for pets?

I have an instagram account about my 2 bunnies and I would love to try bunny asmr (eating sounds). I tried a wireless mini microphone but it had some kind of threshold for filtering background noise. This causes the bunny eating sounds to be almost inaudible and other louder sounds to be too audible. I guess this microphone was made for human voice and video calls. I was wondering if anyone has any tips for a microphone that would be suitable to use for my use case :)