I went with our cat for a USG. I held her while the vet examined her. Suddenly I felt some vibrations in her throat (didn't hear purring) and alerted the vet to

I went with our cat for a USG. I held her while the vet examined her. Suddenly I felt some vibrations in her throat (didn't hear purring) and alerted the vet to it. He said that it's probably a quiet purr, cats often do that when getting examined and it's probably to self-soothe.