By Helen Briggs
BBC News science reporter
A boggle-eyed pooch tucked into a Balenciaga handbag; an elite greyhound tearing around the track in a flash of fur and claws; a sniffer dog on the trail of illicit drugs.
Given that dogs come in every shape, size and colour, it is strange to think they are all wolves under the skin.
According to DNA studies, domestic dogs owe their origins to a wolf cub that probably fell into the hands of humans some 40,000 years ago somewhere in Southeast Asia.
Over the course of thousands of years, they were shaped by humans for hunting, guarding and herding into the 400 or so modern breeds.
"It's incredible what you can do with selective breeding," says Alice Dowswell, exhibition curator at the Walter Rothschild Zoological Museum in Tring, Hertfordshire.
She points out two skulls of different dogs on display at the museum. One, from a St Bernard Dog, is the size of a football.
The other, from a Russian lapdog, is little bigger than a ping pong ball.
"It really shows you how selective breeding has changed an animal from a standard size to come in all different shapes and sizes," she explains.
"Originally, according to DNA samples, it would appear that the domestic dog is most closely related to the grey wolf.
"Point-two-percent is the difference between domestic dog DNA and grey wolf DNA, whereas the difference between coyote DNA and dog DNA is 4%.
"So the grey wolf is by far the closest match."
We are standing in a small wing of the museum among numerous glass cases containing various bones, memorabilia and stuffed dogs.
A group of small children are crayoning in pictures of dogs at a table, while others play a game of "guess the dog's bark" at an interactive display in the corner.
The new exhibition charts the rise of "man's best friend", from feral wolf to pampered lapdog, exploring the origins of domestic dogs and their relationship with humans.
Experts are divided on how wolves first entered the lives of humans. Some believe that a band of hunter gatherers took wolf cubs back to their caves, perhaps to act as early guard dogs.
Others believe that wolves adopted people - creeping ever closer to human settlements to scavenge on discarded food.
By about 15,000 years ago, at the time of the last Ice Age, they were probably living alongside humans, perhaps retrieving wild animals felled with axes or bows and arrows.
The earliest archaeological evidence of dogs as true pets dates back to 12,000 to 14,000 years ago.
That is the estimated age of the remains of an old woman holding a puppy in her hand excavated in what is now Israel.
The exhibition, Dogs: Man-Made Friends, puts another archaeological find from the area on public view for the first time.
Inside a glass case is the skeleton of an Early Bronze Age dog dug up in Tell el-Duweir near Jerusalem - the site of the ancient city of Lachish.
"Finds like these are really interesting for scientists because they give us clues as to how and when dogs became domesticated," says Dowswell.
"Although this is a relatively late example - examples have been found dating back as far as 15,000 years ago, the end of the last Ice Age - it seems that the dog skeletons they are finding are similar to wolf skeletons but much smaller.
"As a reduction in size is one of the first signs of domestication, and the fact that it's been found in a human settlement, this shows us pretty clearly that that's what's going on."
Elsewhere in the museum, among the permanent exhibits, are glass cases containing some 88 domesticated dogs from around the world, including one of the most famous greyhounds ever, Mick the Miller.
"He was a huge hero, he was around in the real heyday of greyhound racing and was an absolute superstar, he even starred in his own film called Wildboy," says Dowswell.
"When he died, his body was presented to the Natural History Museum, that was in 1939, and he's been with us ever since. We still have some of his fans coming in to look at him from time to time."
Dogs are descended from the grey wolf Canis lupus
Dowswell hopes people will come away from the museum with a better understanding of the relationship between dogs and humans.
"I think the relationship between man and dog is a reciprocal one," she says, "so although you can say we use dogs and have made them this way for many reasons, they are also looked after, they are given affection and help in raising their young by humans, so it's very much a two-way thing.
"We'd like people to go away and look at dogs in the street and think about the fact they did come from grey wolves, and think about the fact that it's incredible that there are over 400 breeds in the world today; from the tiny, tiny lapdog to huge deerhounds and Irish wolfhounds."