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Street dogs are being blamed for the deaths of four people in a park on the outskirts of Mexico City.

“Experts have established that due to the gravity of the wounds, at least 10 dogs were involved in each attack,” Mexico City prosecutors said in a statement.

Authorities have begun rounding up dogs living in the park to conduct tests aimed at determining if they were involved in the attacks.

In one case, the Associated Press reports, a teenage girl called her sister with her cellphone to plead for help as the attack took place.

“Several dogs are attacking us, help me!” the girl screamed before the call was disconnected.

Despite that, some animal activists are questioning whether the deaths should all be blamed solely on wild dogs,  and Diana Ruiz, who received the phone call, still doesn’t believe dogs were responsible for her sister’s death.

“What kind of dog can tear the skin from your whole arm and leave just bone and if it was an attack dog why didn’t it attack her neck?” Ruiz told Milenio Television. “What’s most shocking is that one of her breasts was mutilated.”

She said she later visited the place of the attack and saw no pools of blood.

“There needs to be a thorough investigation,” she added.

The attacks occured in the Cerro de la Estrella, a hilltop park surrounded by the city’s Iztapalapa district.

The first two bodies — a  26-year-old woman and a 1-year-old child — were found there Dec. 29, authorities in Mexico’s capital said.

The woman, Shunashi Mendoza, was missing her left arm, and prosecutors said that both she and the boy had bled to death and been partially eaten.

On Friday, visitors to the park found the bodies of  Alejandra Ruiz, 15, and her boyfriend Samuel Martinez, 16. Both had bled to death.

Antemio Maya, president of the Street Dog Protection Association in Mexico City, said he doubts dogs could have killed the people found in the park.

“It’s not the behavior of street dogs to kill humans,” said Maya, adding that blaming street dogs for the deaths could make life difficult for the thousands of homeless dogs in the city.

“A lot of people get tired of their dogs and they simply throw them on the streets,” he said. “This is going to create a terrible hate for street dogs and that’s going to lead to even more abuse.”

It’s estimated that, in the city of 9 million people, the number of dogs range from 1.2 million to 3 million.

Mexico City Public Safety Secretary Jesus Rodriguez told Milenio Television that the four victims were not dumped in the area as some had suggested. He said all the bodies had bite wounds, and that the bites were inflicted both while they were alive and after they had died. He warned against visiting the park.

At least 100 police officers had trapped 25 dogs in the park by Monday night. (The photos in this post are of four of them.)

According to Maya, the trapped dogs included beagles, Maltese and poodles and most were probably abandoned pets or their offspring.

Experts will test the dogs’ hair for traces of human blood and also test their stomach contents. Authorities haven’t said what they plan to do with the dogs.

Previous attacks by feral dogs have occured in Mexico City’s famed Chapultepec Park, but none fatal. After one attack there, authorities rounded up dogs, spayed and neutered them, and then either returned them to the park or found them homes.

Ace and I had a visitor over the holidays — a highly vocal, but not too demanding 12-year-old mutt named Gracie.

My cousin and her husband in Charlotte were headed off on a cruise and they were having problems finding a petsitter for Gracie, who has never been kenneled. So I volunteered.

It wasn’t my first adventure in petsitting. I’d had a handful of canine guests in my home in Baltimore, and served as wrangler for three more while housesitting in Santa Fe. I’d learned, both times, that most issues that come up can be easily worked out, usually by the dogs themselves.

Sweet and low maintenance as Gracie was, there were some problems early on.

I decided they should eat in separate areas, just to be safe, so I’d fill one bowl, and call one dog. Both, because their names rhymed, came. When I said “stay,” both stayed. When I attached their names to the commands – ”Ace stay, Grace come” — that didn’t work either.

Finally, I got one to the porch, and fed the other inside, confusing them both in the process.

On day two, Gracie stopped eating entirely. Even blobs of liverwurst — in which her pills get hidden — had no appeal to her. Wanting her to get at least a little nutrition, I smeared peanut butter on her nose and let her lick it off.

Eventually, I broke out the most special of my special dog treats, and after a good sniffing, she decided to try one. On day three, she was eating normally again, and I’d figured out that feeding them both at the same time in the same place worked best.

By the second day, I’d noticed Gracie, who spent the first night on an extra dog bed, was eyeing mine. It’s only a foot off the ground, but she just stood by it, put her head on it and looked at it longingly. Being old and arthritic — her, not me – I gave her a boost and she spent almost the whole day there.

Not until the next day did I learn that she didn’t need my help — just my permission.

I worried that Ace, who likes my bed too, would take offense at her occupation of it, but, once I told him it was OK, he just jumped in and joined her.

If they were positioned right, there was plenty of room for both. With only minor repositioning, I could fit in, too.

For walks, I’d take them both on a short one, then give Ace a longer one. That seemed to suit them fine.

What I never totally figured out was Gracie’s whining/singing. She whines when she’s happy, she whines when she’s not. She whines when she wants something. She whines, I think, when she wants nothing at all, except maybe to hear her own voice.

Ace, puzzled by that behavior, quickly got used to it. At first, he’d rush to her side, but eventually — as I kept saying, “What is it, girl, what do you want?” — she became background music to him.

Just about every worry I had, when it came to the two of them, turned out to not be worth worrying about. As long as I supplied the food, water, walks and love, they’d easily figure out the rest — the less help from me, the better.

It’s us humans who make things complicated.

Poor Courteney Cox.

The former “Friends” star and her daughter Coco recently moved into a new 25th floor condo with their two dogs — and taking Hopper and Harley all the way down to the ground floor and outside to go to the bathroom late at night was just too difficult.

So she bought a pooch potty to put on her balcony, and when the Cavalier King Charles spaniels didn’t use the draining patch of artificial grass, she annointed it herself to get them interested.

That, at least, is what she said to Ellen DeGeneres in an interview that aired yesterday.

“I’m like, ‘How am I going to work this out? I could walk them at 10 p.m. at night but what if they have to go in the middle of the night?’” she said.

Apparently, solutions such as hiring a dog walker, or living somewhere with a yard, didn’t occur to the “Cougar Town” star.

Once the patch was in place, the dogs showed little interest in it, she said. “… Hopper and Harley would not go. I tried and I tried and it’s getting late and I can’t leave Coco in the condo by herself while I take them out so I just thought, ‘To hell with it. I’ll mark the grass.’”

Apparently, the idea of peeing in a jar, and then going out to pour it on the balcony patch, didn’t occur to her, either. Cox told DeGeneres she squatted on the balcony.

Given the product she’s using requires a new grass pad weekly, she told Ellen she’s worried she might have to keep reannointing them. “I didn’t think it through… but I will say Hopper peed on my pee.”

We have faith that Hopper and Harley, age 9 and 10, will be able to think it through, even without Cox marking every new patch, and — whether it’s 10 p.m. at night, or 6 a.m. in the morning — adjust to using the balcony potty.

(Photos: Screen grabs from Ellen DeGeneres show)

Weeks after losing two dogs, Miley Cyrus has adopted a new one.

Over the weekend the entertainer posted pictures of her new Chihuahua mix, Bean, on Twitter.

“U know I’m a complete crazy dog lady so you could imagine what’s happening to me right now,”she tweeted.

Bean was adopted from Los Angeles’ Spot! dog rescue — the same organization to which she surrendered another dog, Ziggy, late last year.

Examiner.com found great significance in the act:

“As Miley Cyrus opened her home for the four legged creature out of the goodness of her own heart, it seems that other humans are thinking about adoption too. In what has become a teaching moment, it appears Miley Cyrus is actually showing people how much goodness is found in the process of adopting an animal.”

In November, Cyrus lost Lila, her two-year-old Yorkie, when Ziggy, a bulldog she bought for fiance Liam Hemsworth, killed the smaller dog. Ziggy was sent to a rescue organization to be rehomed.

Cyrus has adopted at least six dogs in recent years, including Floyd, an Alaskan Klee Kai, also known as a miniature husky, a Rottweiler-beagle mix named Happy, and a black and white mixed breed named Mary Jane.

(Photo: Twitter)