DH put Bella in her expen enclosure for dinner (they eat separated if we're not going to be able to watch relatively nearby to ensure B doesn't guard).
When he came back a minute later, Scout was in the enclosure, between Bella's legs. He watched Scout wait for a kibble to fall out then grab it and run away to eat. She did this twice before he stopped her.
My resource guarding dog let a cat steal her dinner.