Anything and everything that’s people food! But if I had to pick a favorite I’d say popcorn. I don’t bother making it anymore because they both drive me crazy while I’m eating it. They do not give up. So I eat a piece and then have to give each of them a piece. It’s not what I’d call relaxing.
Cheese. Or peanut butter. She’d get so anxious that her jaw would quiver excitedly.
But Dusty Rose has passed on now, and I no longer have a dog.
Potatoes. I’m able to save a figurative fortune on expensive dog snacks by always keeping potatoes around. I dice them into roughly 1" cubes, bake them and store them in a ziploc bag in the freezer. She can’t get enough of them. She loves potatoes in all ways. As I’m cubing them, she’ll get 1 or 2 raw pieces, and love them. She even loves, in very limited quantities, potato chips. Jalapeno Crunchers included.
My dogs are nuts for produce. If it’s safe for them to have, I’ll let them try it. They love it all. The oddest thing is probably clementines. You’d think it was steak; they love them beyond reason. 
Liver!
I occasionally buy a bag of four turkey livers from the local turkey farm. I boil, cool, then dice/freeze them for dog treats. They know the smell of cooking liver. But sometimes the cooking liver is for us (Liver Stroganoff!) and the dogs are confused.
As soon as our dogs hear my wife using the cutting board (with the nice ceramic knives she got for Christmas), they rush to sit next to her in the kitchen.
Sausage? Meat? Bacon? Fish? Nope.
Green vegetables. They bark loudest and whine the most for asparagus, green beans, and broccoli. Raw, steamed, or in a casserole…they love them all.
Dang near everything! In the realm of doggo cuisine they go apeshit for Beggin Strips – the company’s logo should be “Crack for Dogs!”
They rarely get people food, but when I order from the sun shop there is a dog tax of three French fries per.
With Doxie, it’s field mice.
Disgusting dog.
Thanks! I had never heard that one and blamed autocorrect. 
When I was growing up, we had a St Bernard who loved nuts. Walnuts, almonds, hazelnuts, whatever we had in the bowl. She was a surprisingly tidy St Bernard, but if you were sitting there cracking and eating nuts, she would drool an actual, literal puddle on the floor at her feet, hoping you’d give her one. She had a head like a bear and a skull like a bowling ball, so we’d just give them to her whole and she’d crack them with her teeth, and spit the shell out.
We also had a cat who demanded popcorn. It got to the point where we just gave her a dish of it whenever we sat down to watch movies, so she’d quit lurking on the back of the sofa and trying to grab it out of your fingers with her claws.
I currently keep rats, and every one I’ve ever had would pawn his own little rat grandmother for frozen peas. I have no idea why. The little bastards even peel them. They throw the peels everywhere, like chicken bones at one of those medieval theme restaurants. By the time they’re done eating I have to clean a kerjillion perfectly-hollowed out green pea skins off of their cage and the floor around it.
They also love iceberg lettuce and raw corn. I gave them an entire ear of corn once and by the time I got the tablet out to take pictures, I swear a third of the cob was nekkid. At that moment, I understood why rats are such godawful pests on farms.
Our chihuahua cross adores Christmas oranges, mandarins. I give her 3-4 segments.
From day one with our now-departed spaniels, I made it clear that they were NEVER to be fed scraps at the table. Between that and the fact that the possessed about 1/2 brain cell between the two of them, they never developed a habit of begging at the table, or even trying to look soulful and pathetic in the kitchen while I cooked.
However, they loved cat tootsie-rolls. We lived in three different houses with dogs and cats, and in each location we had to jury-rig something so that the cats could easily get to the litter box, but the dogs could not.
The funniest thing the kids gave our lab mix was finger jello. Watching him figure it out the first few times was a riot. Now he just slurps it down like just about anything else he can get. Except he doesn’t eat raw chicken or a few veggies like peas. He is most partial to whatever is in MY hand, not anyone elses. That and popcorn. I only get half a bag.
My sister has two doxies. Every morning, they share a half slice of toast with peanut butter and an egg with her. At night, they get small scoops of ice cream. Molly prefers peach ice cream, Dach likes strawberry. Trying to cook at their house is an exercise in not stepping on a critter. Both dogs and the cat are constantly underfoot, just hoping for anything to fall. Yesterday, during Easter brunch, they ended up with small bits of sausage, they shared a hard boiled egg, loved the bit of lemon poppyseed muffin my niece “accidentally” dropped, and slurped a small glass of apple juice that was left low enough for them. How they’re not obese, I do not know.
I had to look that up too!
Yeah, I looked up “finger jello”, bleech. Sounds like jello that has sat in the refrigerator too long.
I scoff at your confusing eye dialect.
I occasionally make what I call Incredibly Stinky Dog Treats. It’s baked like a brownie, and you start by blending raw liver until it’s liquefied. I’ve been know to carry my toaster oven outside and plug it into an extension cord because it smells so bad when cooking. But boy, the cats, the dogs, they all love it.
StG
Just remembered - there was one other thing that our spaniels loved to go after: fish food crumbs! The fish are fed twice a day, and sometimes a few tiny particles of fish food will wind up on the floor by the tank. The dogs would wait while the scoops of fish food were shaken into the tank, then lick the floor in front clean, just in case a few morsels of yummy fish flake had escaped.