This is totally prohibited!

One of my friends wants to open a business, It is related to dogs – its a bit complicated – in pakistan he has different types of dogs and usually people who have female dogs they want to CROSS breed it . For this they want to charge some money . So people with female dogs will bring their female dog and come to these people , and they will make her cross with a different breed . So for this they want to earn money ..will the income be halal or harm ???

Jobs | August 15, 2015 8:09 pm
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a woman whose profession is baking cakes. She read a fatwa that baking cakes for birthdays, anniversaries etc is Haram. So does that mean any Bakery that bakes cakes is Haram because whether someone accepts it or not, most of the cakes are for Birthdays and Anniversaries. That woman also takes any Cake order that comes and does not celebrate Birthdays or Anniversaries herself nor does she specifically advertise that she bakes cakes for Birthdays and Anniversaries etc. Catering Businesses also serve food for such occasions but nobody calls them Haram as this is not their business in specific and they prepare food for any occasion. Why do Big businesses get away and small ones suffer due to such fatwas.
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If someone tells me to buy something for him, and I know places where I can get it at a cheap price and that it will cost me 500 riyals, but I tell the man that I will bring it for him for 750, adding my cost of bringing it such as car and petrol and also adding my profit, but the man is unaware that I am charging him extra. Is this right? If not, what Should I do to make it right?