Monday, March 17, 2008

Dogs

How were people able to develop the different breeds of dogs and why do some dogs have more problems then others? Give an example.

18 comments:

Silly Willy said...

They use selective breeding and cross breeding. They just use the traits that they want and breed those dogs together until they get the desired breed. It may take several generations. The dalmation has severla health problems and cant see very well because it may have even been inbreed together.

matt said...

They chose dogs that they wanted to breed. They eventually developed new breeds. They picked the traits that they wanted for there special need and eventually developed that breed of dog. There is a lot of selective breeding that goes on in the world today. They also can interbreed and have the same species of dog. The generations can go on forever to get a desired trait in a dog. The german shepard is an example of interbreeding and a dalmation is a interbreed and it can have very many health problems.

Kendall said...

People began to use selective breeding. They also used cross breeding. An example of this happening is in the Dalmation. It can create many health problems for the dog.

SMAX said...

They use cross breeding and selective breeding to select the two best breeds. Some dogs may not live as long if they are cross bred. dogs that are pure bred have a longer life expectance and are less likely to get diseases.

chris said...

They picked out the dogs that they wanted to cross. Then after time that type of dog developed into a new breed. You can keep breeding different types of dogs until you get a desired trait.

Bierman said...

They used selective breeding and cross breeding to get the trades that they wanted passed on. After a while the dogs with these traits are a separate breed. The dalmation is an example.

Gil said...

people picked a dog that would be a good dog to breed. then they keep taking the best dogs to keep it going. some dogs have problems because they have differant genes that make them look differant and changes the way they are made

Tiffany said...

people were able to develop different breeds of dogs using selective breeding. some dogs have more problems than others because they may have been interbred, or simply because of their physical characteristics. such as the dachshund, it has a very long body, and the breed are prone to back problems.

chelsea said...

They selected the dogs that they wanted to breed by the qualities and genes that the dogs had. When there is a problem that could occur it probably won't be detected for many generations. Examples of dogs that do have health problems because of being inbred are the german shephard and the dalmation.

bean said...

they cross breed and pick the ones they want. after being in breeded for a long time some dogs just have problems. thats why we cant do our sisters or brothers or any other part of our families.

Tristen said...

The scientists used selective breeding and cross breeding to create dogs that had the characteristics they wanted them to have. Sometimes, the hardest part is finding the correct dogs to breed. An example of breeding the dogs, could be yourkshir terriers. They have a hard time, because it isn't easy to find a pure breed yourkie.

sweet said...

People started to breed gods selective for a long time and they still do breeing, and it goes by cross breeding and selective breeding.but there are alot of health problems still and it can be shown in their generation.

!*Liz*! said...

They were people able to develop the different breeds of dogs by using Selective and cross breeding. They do this to get better species. This usually happens in dogs. Their are a lot of different species of dogs because of inbreeding.

Matt G said...

we get punr breeds have more prodlems then muts. the cross dreeding is best. they will have less prodlims.

Kayla said...

They use selective breeding to get the certain kind of dog they want. Some animals have diseases such has hip displasia so if that dog is breeded with another dog without it their offspring has a chance of getting it. They use the selective breeding to make many different kinds of dogs.

rach said...

people were able to develop the different breeds of dogs through selective breeding. cross breeding has also been used. i have a dachaund, weiner dog. my dog is having back problems b/c she is soo long and little and so low to the ground. some dogs have more problems than others b/c of how they're breed and what they've been crossed with

Anonymous said...

They find different traits in dogs that they like and breed dogs with the similar traits and try to get dogs the way they like. Some dogs have hip problems or eye problems. The bloodhound has a lot of eye sight problems. They might inbreed the dogs because they want a pure bred dog.

crystaldragon said...

dogs are the most common animal to that we have done this to. we so this because we just want to satify our intrests. thats why we have many different breeds of dogs.