I've been seeing some of this on mine as well. I'm suspecting birds but I've not caught anyone in the act yet.

Looks like birds. Pick them as soon as they blush.

Cage them with two plastic baskets that berries come in or cover them with zip-lock baggies with the corners cut out. A little cayenne pepper won't hurt either...and put out water for the critters.

tj

During very dry conditions, I've seen squirrels cause damage like the pics show. They go after the tomatoes for the moisture.

Another vote for squirrels here, if these were low hanging fruits it might also be rabbits.

Rats are another possibility. They feed at night, so you wouldn't catch them in the act.

I was having some damage to low growing fruit and I soaked some rags in ammonia and put around the plants and have had very little damage since then.

Thank you everyone for your help. Looks like the consensus is a larger pest and not bugs.

My plastic bags are working so far to deter whatever it is.

Thanks again!

I have this problem, too, with early tomatoes. I am going to try covering the whole darn plant with fine netting.

Another thought, if these tomatoes were very low hanging, almost touching the ground, then turtles may be the causing the bite marks. The bites look similar to the damage box turtles inflict on my cantaloupes.

Last year I lost most of my tomatoes to critters. This year I made panels of wood frames and bird netting. I attached them together around the plants (also made a roof panel). It's a pain opening the panels for picking, but I got a bumper crop and didn't lose one tomato.

It sounds like a lot of work to wrap each tomato. Why don't you pick them as they blush and ripen inside? Do you notice a difference between ripening on the vine or indoors?

A slightly ripe tomato that's plucked and then allowed to ripen indoors is every bit as tasty as one that ripens on the vine. It has been shown by experts to be true - there is no benefit (regarding taste) to be had by keeping it on the vine. And most of us know this from practical experience.

Looks like a ground hog to me. I had the exact same thing last year; even caught the little bugger in the act. The plastic wrap will only deter it for a few days then it will be back. Your best bet is to trap it. They can get quite large so a big trap might be needed. Bait it with the leftover tomatoes and some peaches.

I agree with blue_skink. We grow big beef beefstake tomatoes. We regularly pick the green fruit when it is large to let the smaller ones get big. We put them baskets a couple of layers thick. I check them every few days for ripeness. I've gardened for more years than I can count and I've tasted vine ripened tomatoes and those picked green and I know there is no difference in taste or quality.

Ive seen that ragged tearing into ripe fruit and I'm sure it is made by birds

Ammonia : How often to reapply?

Slightly ripe : Is its size at max at that point, or will it continue to enlarge?

Green : A lady posted a picture of her large tomatoes, sliced. Some red, some green. Do RAW green taste good? (I could not find again the thread, in order to ask her.)

Does anyone recognize?

Picked and photographed immediately before this posting. Never received impact, not resting on anything. Gorgeous strong new plant 6.5' tall, many (not excessive) green fruits; this is first and only ripening one.

four - there are plenty of green when ripe tomatoes:
zzzzhttps://www.google.com/search?q=green+when+ripe+tomatoes&sxsrf=ALeKk00g0PwMWOLPm1pRtN7kC4TWpE7lYg:1585326834572&source=lnms&tbm=isch&sa=X&ved=2ahUKEwjXis_WirvoAhUGhXIEHdAIDa4Q_AUoAXoECA0QAw&biw=1612&bih=757&dpr=1.13

I was thinking of fried green tomatoes.... yum!

Four: is that a tomato? I never seen a seeding pattern like this one.

Tomato. I stay in context : ) . Later I will further open to examine. Perhaps insect(s) churned the innards.

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Green ripe tomatoes; another bit of education, thanks for it.

Four, one of my favorite tomatoes is a green-when-ripe, but splotched with red. It's called "Big Zebra" and tastes almost like a kiwi fruit when ripe.