Three tiny power plays dogs and cats use to claim the best cushions, steal the blankets, and quietly evict their humans.
The edge wedge that makes you perch like a visitor

It never begins with the dramatic sprawl. It's quieter than that. One of mine figured out that if he parks his ribcage right on the cushion seam and aims his back at my thigh, I will do the rest of the work for him. I start by sitting normally. Ten minutes later, I'm on the outer two inches like I'm riding public transit, because the seam acts like a little ramp and suddenly his body takes up more usable real estate than it should.
The trick is the angle. They don't lie parallel to you. They go slightly diagonal, so their shoulders block the cushion edge you want, and their hips push you toward the arm. If it's a sectional, they pick the inside corner because it gives them a brace point to shove without looking like they're shoving. Then comes the slow, innocent scoot: a paw stretches, nails click once, and the torso slides exactly one inch. They repeat that every time you shift your weight or reach for the remote. You feel like you're being polite to a guest. You're being managed.
I've watched this happen during a Packers game, during a Netflix binge, and during the one time I thought I'd read a book like a serious person. Same outcome. And the funniest part is how calm they stay while you do a whole negotiation in your head: Can I reclaim space without moving him? If I stand up, will he take the whole spot? If I put a pillow here, will he treat it like a new bed? Spoiler: the pillow becomes his, too. By the time you consider moving them, the last available chair already looks easier.
Blanket law: once it's draped, it's theirs

There is a specific moment when the couch stops being furniture and becomes a territory map, and it's the second a blanket hits it. Not folded in a basket. Not hanging over the back. Draped. That loose, casual throw you meant as a cozy touch is basically an engraved sign that says "Reserved."
Dogs and cats may disagree about almost everything, but both recognize a freshly draped blanket as premium real estate. Fleece gets the immediate chin-plant. A woven throw gets the slow, kneading-paw inspection, as if someone is testing a mattress. If it is one of those Sherpa-lined blankets, the lucky claimant performs a full-body melt and somehow appears 30% wider. The magic is that the blanket hides the evidence. If they shed, you barely see it. If they drool, it blends in. If they perform the little circle-and-flop routine, the fabric muffles the thump, so you don't realize they've moved from ‘cute’ to ‘occupying’ until your hip hits a warm lump.
And because it's a blanket, you hesitate. You can move a pillow without guilt. You can shift a pet bed on the floor without feeling like a monster. But tugging a blanket out from under a dog or cat? That feels like stealing a cape off a superhero. They know it. They bank on it. They'll even hook a toenail into the weave, not enough to snag it, just enough to add resistance so you give up halfway and sit somewhere else.
The blanket is no longer household décor; it is officially pet property.
The synchronized stretch that reassigns seating without a sound

If you live with more than one pet, the couch conquest gets weirdly tactical. They don't need noise or a dramatic leap. They just need timing. Mine have a move I can only describe as a group stretch that turns into a quiet eviction.
It starts with the one closest to you doing the classic front-legs-out, chest-down stretch. He looks polite, like a yoga guy. But while your eyes are on him, the second pet stands up, turns around once, and settles exactly where your knees were planning to exist. The first pet finishes the stretch and flops sideways, not toward the open space, but toward you, so your elbow loses its home. In under five seconds, your seating position has been reassigned. No growling. No drama. Just a new arrangement where you are somehow the smallest creature on the couch.
The part that makes me laugh is how often it happens during transitions I caused. I reach for a drink. I toss a toy down the hallway. I pause the TV to answer a text. Those tiny interruptions are like a green light. When I sit back down, my spot is still technically there, but it's been divided into two warm zones, with paws sticking out of each. And because they're relaxed, you feel ridiculous asking them to move. They look at you with the same expression they give when you're late with dinner: calm, patient, slightly disappointed in your planning.
Once the stretch begins, your former seat becomes a collection of paws, tails, and innocent expressions.