Before Nacho, I assumed dog ownership came with one contract: food and walks in exchange for companionship and the occasional shredded slipper. Nobody told me the chihuahua edition ships with appendices. The American Kennel Club's breed page describes them as charming and sassy, which I now understand is the legal disclosure. What follows are the clauses I have discovered the way everyone discovers them: one at a time, in my own home, always slightly too late.

Clause 1: Blanket archaeology

You will never again sit down on a soft surface at full speed. Every cushion, throw, and laundry pile in this house is now presumed occupied until excavated, because Nacho sleeps under things the way other dogs sleep on them, a lifestyle our burrowing guide assures me is completely normal and which my guests describe as "your couch just growled." I have patted down more blankets than airport security. I have found him in exactly none of the places I checked and all of the places I sat.

Clause 2: Lap tenure law

Once a chihuahua has achieved lap, you are no longer a person. You are zoning. Movement requires filings. I have let a leg go fully numb during a three-hour movie because renegotiating Nacho's position felt like more paperwork than the leg was worth, and I say this as a man who once told friends he would never be one of those owners. The friends no longer come up in conversation. The leg has mostly forgiven me.

Clause 3: The doorbell opera

Our doorbell triggers a performance in three acts: alarm, aria, and encore, the encore continuing well after the delivery driver has returned to the depot. Neighbors who have only heard us through the wall believe I own six dogs. I own four pounds of dog, distributed entirely into the vocal register, and we are working on the quiet cue with real progress, by which I mean the opera now has an intermission.

Clause 4: The wardrobe imbalance

There is a drawer in my dresser I no longer control. It contains sweaters, a raincoat with a hood he refuses on principle, and a fleece for what the clothes guide calls dry cold, which I now distinguish from wet cold, which requires the other coat. My own coat is six years old. I stood in a pet boutique this winter comparing thread counts for a dog who licks the floor behind the refrigerator, and I paid, and I would pay again.

Clause 5: The forty-minute walk to nowhere

Our evening walk covers a distance I could throw a tennis ball, in a duration that qualifies as a screening of a short film. Every hydrant is a deposition. Every fourth step is a full stop to confirm, per the speed guide, that he could outrun me if he chose to, which he does not, because the leash is holding up my end of a conversation he is winning. We are not exercising. We are patrolling, and the route belongs to him.

Clause 6: The dinner tribunal

I no longer eat unobserved. Every meal convenes a tribunal of one, seated at a regulation distance of eight inches, staring with the calm of a creature who has read our begging guide and elected to appeal. He receives nothing. He has received nothing for two years. His faith that tonight is the night remains the single most inspiring thing in my life.

Clause 7: Guest orientation

Visitors to this house receive a briefing before the door opens: do not reach down, do not make the high noise, sit anywhere except the brown chair, and she will come to you, at which point you may be granted one finger of contact, revocable. My mother calls it "the speech." The speech works. The speech is also, word for word, what the socialization guide recommends, which means the smallest resident of this house has successfully installed a security protocol staffed by every human who loves me.

The signature page

Here is the thing about the fine print: I have read it all now, and I keep signing. The blanket checks, the numb leg, the opera, the drawer, the patrol, the tribunal, the speech. Fifteen clauses in, you stop calling them terms and conditions and start calling them Tuesday. Nacho, for his part, honors his single obligation, which is to relocate from wherever he is to wherever I am, every time, forever. It is the best contract I have ever signed with anyone, and I did not even get the drawer.