You need to have JavaScript enabled to view this video clip.


All dogs belong to the same species. Any two dogs are able to mate and produce puppies. These too will be able to mate with any other dog. Differences between different animals in a species, such as different breeds of dog, is known as variation.
This clip is from:
First broadcast:
26 October 2007

Classroom Ideas

Dogs can be used to explore ideas of inheritance and variation. Recent breeds of dogs such as the labradoodle could be looked at in terms of the characteristics they have inherited from their parents. Present the class with pictures of different breeds of dogs and have them group them into sets that are more closely related to each other. Pictures of mongrels could be included, with students trying to work out which breeds the parents may have belonged to. The ethics of dog breeding could be debated, considering the health and behavioural problems that some breeding can lead to.

This clip also features in: