Several of my cats love to eat Vaseline.
It's good for hairballs.
A few years back when a vet told me to give my cats Vaseline for this, I did as instructed.
While wrestling the running chainsaw and stuffing Vaseline down the jaws of a Piranah, I felt something on my finger, it was the other cat who came to investigate the screams of terror and when he smelled the Vaseline he started licking it up.
Now I have a "Kitty" Vaseline jar that I stick out and most of them will get a dose unattended