On a side note but still purr related I heard (in the Big Cat Rescue YT Channel)
That cats purr in a frequency to heal bones.
"optimal frequency for bone stimulation is 50 hertz. The dominant and fundamental frequency for three species of cats' purrs is exactly 25 to 50 hertz: the best frequencies for bone growth and fracture healing."
So interesting huh?
We should start a thread about purring