Hello, I'm Eric. I'll be trying my best to assist you on your question toda
There is no full answer for that. All dogs are made having the ability to bark. Although, tiny dogs are more overprotective and K9's (police dogs) not trained can also be overprotective and bite/bark more than most dogs.
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Transport proteins- an example of a protein in the plasma membrane is integral proteins, which main function is to transport molecules across the membrane. Hope this helps :)
