Some breeds of dogs are sighthounds and use their eyes to follow prey. Eyesight in general is not one of a dog’s stronger senses. Dogs have what is known as dichromatic vision. Besides shades of grey and black and white, they see two primary colors – yellow and blue. Old television sets were analog and […]
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One of the joys of owning a parrot can be the bird’s ability to talk. It’s such fun to seemingly carry on a conversation with your bird. It’s interesting to speculate how parrots can talk since they don’t have vocal cords or lips. Dr. Irene Pepperberg did some research on the subject at Brandeis and […]
