It's a grape tomato plant if that helps at all! It's in the very back and surrounded by bigger tomato plants, and I am not seeing any damage on other tomatoes!

Hornworms also eat fruit - just like that. But so do other things - birds if they have access, if low to the ground then squirrels or turtles.

You don't indicate your location or zone (please do when you post) but here the hornworms have started so they may be there too.

Dave

Oops! Sorry! Central Iowa here.

I've been on this hunt for the hornworms for sure. I haven't seen any yet. I did find some bird "presents" close by, I just ruled them out because they would have to sit on my deck behind my raised bed to get to them!