Jennifer Aniston and Justin Theroux adopt puppy

actress Jennifer Aniston and her partner, Justin Theroux have decided to adopt a puppy  

Jennifer Aniston and Justin Theroux have adopted! But don't get too excited—they've just welcomed a new canine companion to their little family.

Of course, adopting a new pet is a big responsibility. Just ask Selena Gomez whose poor dog Baylor had to fight for his life when he swallowed a bunch of rocks. Justin Bieber might not exactly be Baylor's daddy, but Jen and Justin are following a big new celebrity trend by adopting a dog together as a couple. Robert Pattinson and Kristen Stewart, Prince William and Kate Middleton, and Drew Barrymore and Will Kopelman are just a few of the celeb couples who have become parents to some very lucky dogs.

Jennifer Aniston has been the subject of tons of baby rumors lately, but maybe she and Justin Theroux have planned to get a little parenting practice with a puppy for they decide to raise a little human together. Their new pup is a pit bull-boxer mix named Sophie that they rescued from a shelter. She'll be joining Jen's white shepherd Dolly, who lost her canine friend Norman last year.

Jen obviously loves dogs quite a bit, so hopefully Justin feels the same way. She got Norman's name tattooed on her foot as a tribute to her old friend, and she currently has three dead dogs on her mantle.

But before you get too creeped out, she didn't take all her old pets to a taxidermist (although Jen says she did think about it)—she had her canines cremated, so she keeps their ashes in urns.

Jennifer Aniston also says that she thought about having one of Norman's paws turned into a keychain, so hopefully Justin Theroux doesn't mind having a slightly morbid girlfriend.

Jen and Justin should be great puppy parents since she's had so much experience with dogs, and it's always nice when celebrities choose to adopt pets from animal shelters. And who knows? Maybe Jen and Justin will do for dogs what Brad Pitt and Angelina Jolie have done for children—they certainly have the money to take care of six or more canine kids (although Jen couldn't give birth to three of them, of course).