How is GM foods being used?

People have been breeding animals and new varieties of plants for many hundreds of years to develop or avoid certain qualities. For example different breeds of dogs. Maltipoo is a cross breed between a maltiese and a poodle.
Many horses, flowers and foods are genetically modified.

Cattle are bred according to whether they are for beef or dairy. Most of today's dairy cattle are very different from the cattle that were originally used. Over the years, dairy herd breeding has focused on increasing milk supply and on improving the quality of the milk.