ALIEN PLANET™️
The Mimicking Suckbug is one of the most interesting creatures to ever fall from the stars. 
The lifeform gets the first half of its name from its unique hunting strategy, in which it disguises as an appropriate object to lure prey into its range. A Mimicking Suckbug will take a form it deems appropriate shortly after birth or after shedding its previous form due to traumatic injury, such as descent from orbit. It will keep this form for the rest of its life unless it is forcibly removed or destroyed. 
The latter half of its name comes from the method with which it digests its prey, which we will see firsthand shortly.
This Mimicking Suckbug has taken one of the most common forms for fooling the species on Planet Fur: an outdoor vacuum cleaner. Its suction tube conveniently houses the voracious proboscis, and the large, cylindrical base provides plenty of space to hold smaller prey. Young anthros are thus the most common target for Mimicking Suckbugs bearing this disguise.
Our Mimicking Suckbug wheels through the light foliage of the woods with ease. Despite what its exterior would suggest, it has not given up its strength or mobility with this form. It passes through the bushes and shrubs with ease as it approaches a man-made structure.
A small anthro raccoon cub approaches the strange object curiously as it emerges; The Mimicking Suckbug's next meal is in its sights.
6-year-old little Kinsie was playing by herself on the playground when the strange vacuum cleaner rolled out of the woods. She briefly glanced back at her mother, deep in conversation with another woman, before walking up to it to investigate. Perhaps someone had pushed it out of the bushes. But who?
SFFLK
As soon as the little pink raccoon was close enough to the mysterious object, the segmented tube lunged for her head. In an instant, she was ensnared, her cries for help muffled before she could make them.
GLURRP ULLRP SLLLLCKK
In only ten or so short seconds, the little girl disappeared into the tube as it engulfed her entire body with deceptively flexible flesh. The inside of it, wet with viscous bodily fluids, pressed all around her and dragged her deeper and deeper in.
ULLP GLRRRFGLK
Soon, she was fully inside, and the creature left no trace of her. From the outside, it was nothing but an out of place vacuum. The only thing that was amiss was the brief flow of clear fluid from the suction nozzle, which drizzled onto the ground like thick saliva. This fluid was all it left behind where the little girl had just been.
While the Mimicking Suckbug retreats once more into the cover of the woods, it already begins subduing its prey. Though the soon-to-be-meal assuredly has no chance of escaping, especially with the sound-dulling properties of the creature's flesh, it's always better to have an unmoving passenger than a violently struggling one.
The anthro cub is restrained tightly in binding folds of the soft but tough internal flesh of the lifeform, which holds its arms outward and its legs diagonally upward, spread apart. The prey will spend the rest of its life in this position.
Next, the layer of flesh comprising the 'floor' of the Mimicking Suckbug's internal structure presses up tightly against the prey's underside before undulating rhythmically, producing an effect similar to a suction cup across the covered regions. 
Though this unusual feeling may initially cause the prey to panic and struggle harder, it will soon die down as it begins to feel soothed by it. During the rest of the digestive process, the prey will be completely still and unresponsive.
However, it mustn't be disturbed during its digestion. As such, the Mimicking Suckbug seeks a place of seclusion where it is unlikely to appear out of place or be desired for use as the object it is mimicking. This specimen has made its base of operations in a dilapidated toolshed behind an abandoned property.
SLK SHLRP PLRP
Kinsie squirmed and screamed uselessly as the soft flesh sucked on her nether regions and behind. It was an unusual, uncomfortable feeling, and it was terribly violating for the poor girl. 
Strange feelings she'd never experienced before wracked her entire body as it continued unheeding of her desperate struggles. The small child experienced her first orgasm under the strange circumstances, then her second.
SHLLLK SHLP PLRSHK
The horrible discomfort never quite subsided, but pleasure beyond what her little mind could process soon overpowered it. The girl began to breakdown, unable to move or fight against the weird sensations forced upon her.
Days later, she hadn't known a moment of peace. Her eyes were closed nearly all the time, and glazed over with an unthinking stare when they weren't. She seldom made any attempt to move, and she never succeeded. She still didn't know what the thing was or what it was doing to her, but she couldn't even form such questions in her broken little mind by now.
Days pass as the Mimicking Suckbug works diligently at its prey. Though the continuous sucking motion of its inner tissue does subdue the prey, this is not its only function.
As the undulating tissue sucks on the prey's orifices, the organs inside begin to slowly, gradually loosen and move outward. This starts with a mere prolapse, but over the span of days, weeks, or even months depending on the prey, the reproductive organs and intestines will be entirely inverted outside of the prey.
Once the organs have been isolated, teeth extend from the soft flesh to cleanly sever them before retracting once more. It is unusual for the prey to even notice this process occurring due to the Mimicking Suckbug's tight mental grip on them.
After the organs are severed, they are slurped down into a digestive pouch just beneath the organ holding the prey. Most species, anthros included, have little nutrients throughout most of their bodies that an extraterrestrial creature of this sort can utilize, but their guts are rich with valuable nutrients. Just one length of intestine can last a Mimicking Suckbug months.
Over time, more and more organs will be removed in this manner as the suction of the Mimicking Suckbug's inner tissue pulls them to the openings in the body. Small tendrils pierce the skin as this happens, which may replicate specific vital bodily functions. 
Keeping the prey alive in this way is believed to be enrichment for the Mimicking Suckbug and is observed in all specimen thus recorded.
SCHLRRP SHKHK SHLKLKKK
The trapped 6-year-old hardly stirred as her uterus gradually worked its way out through her vagina or as her intestines were similarly pulled out from her rectum. She jolted upright only briefly as sharp teeth pinched them off and needle-like appendages poked into her skin to replace their functions.
GLRRRGGLE GLRRP
The sound of her insides being digested by the creature echoed around her from below. Little Kinsie didn't even notice.
Her 7th birthday was coming up soon, not that she knew this or even remembered what birthdays were like by now. All she knew was the dark insides of the creature and the soft flesh convulsing around her at all hours of the day, and she barely perceived that anymore.
PLAP SHLP SHKLRRSHKL
The brain, of comparatively little nutritional value and rather inaccessible to the Mimicking Suckbug, is the only organ left within the disguised lifeform's prey. The rest are fully digested into invaluable nutrients for the being.
To waste no potential nutrients, the Mimicking Suckbug has one last trick up its sleeve. 
It convulses tightly around the hollowed-out prey, crushing it in an instant into a dense ball. A unique bodily fluid drains into the organ that previously held the prey and seeps through the ball of crushed remains, draining along with any nutrients that bind to the fluid into the digestive pouch below.
It's common for this fluid to become viscous over time, especially when it has collected non-digestible particles of matter within it. Thus, any that remains inside the Mimicking Suckbug tends to build up in the proboscis when it expels the remains of the prey. It then often drips out during the process of devouring new prey, as if the Mimicking Suckbug were salivating. This has earned the fluid the nickname 'Mimic Spit'.
For a fraction of a second, Kinsie once again entered a state that might be considered fully awake and lucid as pain overtook every inch of her body, inside and out. Then, just as quickly, her entire mind was snuffed out as her body was forcefully compacted into a tight ball.
CRUNCH
Nothing remained of the little girl but a tightly-packed mound of shattered bone fragments and gorey pulp, wrapped up in mulched-up pieces of her pelt, still speckled with patches of pink fur. Her remains were held tight inside the creature as fluid trickled onto and through them, bringing any remaining useful bits of her down into the digestive chamber of the strange being.
And now, after many weeks in the toolshed, our Mimicking Suckbug slowly trundles away, no doubt looking for somewhere to discard its preys remains so it can begin another hunt.
HRRRGHH ULLGHRRRR- HRRRGHL SPLATLRLRTLLRLTLTRRR...
A ball of gorey child remains was forced out of the creature's long tube into a small recession in the earth beneath a bush. The mound of mushy former-child dripped blood and Mimic Spit into the soil below as fluids from both parties slowly flowed off of it.
The vacuum cleaner turned away from the pile and rolled silently off into the brush. All that's left of little Kinsie was left to rot.