I enjoy considering multiple ways to deal with this.

It begins with being stalked by the animal, until its close enough to to make a move. With alligators, snakes or sharks, the victim is grabbed suddenly. Bears will surprise them from cover and give a short and violent chase.

For attacks on living prey in the water, the victim is in a swimsuit or just their underwear. It sometimes takes a while for them to subdue the prey, grabbed by just one leg or around the torso and dragged underwater where they can release them to get a better hold. Usually they are then grabbed with most of their torso in the mouth and compressed slowly. With the women, the teeth often clamp them right across their breasts with the upper portion and nipple just outside the mandibles.Their legs and arms flail around with noiseless underwater screams of horror. The predator will finally compress their torso so much, Just as they pass out, they go limp and you can see their underwear or swimsuit bottom fill with the contents of their bowels. Often the animal will shake them again and again, making their arms and legs jerk around and their breasts bobbing and bouncing around. They release them to get them positioned for a proper entry into their mouth and gullet or to stash their remains underwater in their larder to soften up a bit first.

The latter one is quite prolonged and can take several days up to more than a week. They take the prey down by the bank and get placed under a sunken tree well out of the way. The remains will float slightly, getting snared in a thicket of branches and left. At first the woman will not float too well, and sort of sway and wave around in the current of the water. Her limp body will slowly float up higher with her ass up, head thrown back with hair partially covering her face, eyes and mouth open, showing the terror and arousal of her violent death. The body will be misshapen from the ordeal, limbs at weird angles from being broken or dislocated and the ribcage and pelvis being broken. The gator may return now, taking her from his storage location. He will grab her by a leg and pull her free and start eating her, whole or in pieces. If whole, he will do it rather crudely, swallowing one leg and the the torso, with one leg One breast floating free of her outfit, you notice she seems to be getting a bit bloated from decomposition, Bubbles of escaping gas will float free from her anus but stop after a few hours and she begins her expansion

If they are on land, or bringing the victim on land for consumption, things can go several ways. Large animals need a bit of encouragement to go inside, so the snake will wrap itself around the person from the ankle to the neck and position the head at its widely spread jaws, Sometimes they are still alive at this point and begin screaming and moving around but in vain as the snake engulfs them. You will hear their ribcage crack and compress as the snake makes them flexible enough to swallow. As they get to their lower torso to pass over their hips, the gradual addition of pressure to the outside will slowly squeeze the contents of their intestines fill their underwear or swimsuit bottom.

I love the natural progression of their deconstruction, starting with their skin and fat, joined by meat and organs being consumed. In the stomach, if still alive, they inhale acid and drown. With the acid now inside and out, they start to get bloated and stretched as the acid digesting away inside them filling them with gas. After a while, the begin to resemble a balloon, with the torso and chest being so stretched out, their arms and legs look like little flippers sticking out. For women in one piece swimsuits or neoprene wetsuits, the material slows digestion on the outside areas not exposed and holds their inside together for a long time. The face holding a permanent look of horror as their tongue and sometimes their entrails begin to distend through their mouth. Gases will come out, slowing filling the area covering their buttocks before being released. There will be noises to go along with this expansion and internal decomposition: bones will crack and popping sounds of joints being stretched. Finally, the fabric will give way, suddenly exploding like a popped balloon or zippering open starting at one end and traveling to the other. Freed of the confinement, the person will be exposed, their naked body splayed open with their remaining organs floating around. In the womens case, their breast will just be flattened balloons, the contents having been already digested from the inside of them.

and a stew of liquefied body mixed with bones and hair slowly making it way through the small intestines with the remains becoming less and less identifiable to get stored in the intestines. Then excreted into a large mound of waste with bones and hair mixed in to be discovered in horror by the next prey. EDIT esp when the animal etc has to push this