Here’s the modified article in English, shortened and simplified to about 280 words, with the key quote kept exactly as is.

That tiny blue streak hidden under the fur is a clear sign: this dog has already been spayed or neutered.

Vets tattoo it during the surgery while the animal is under anesthesia. It’s not for looks — it’s a permanent marker so no one has to guess years later.

“Scars can fade, owners can move, records can vanish, and shelters often meet dogs whose past is a complete blank.”
That’s why the small blue tattoo exists. It stays forever, even after a decade or more.

Many dogs arrive at shelters with zero history. Old owners might have moved away, paperwork gets lost, and surgical scars disappear over time. Without this mark, nobody knows if the dog has already been fixed.

The blue dot solves that problem quickly and reliably. It prevents unnecessary surgeries and confusion.

Shelters, rescuers, and new owners can spot it right away. One quick look under the fur and the answer is obvious.

It’s a simple, smart way to keep things clear for the dog’s whole life.