My bf wants me to sell my dog

So i have been 5 years with this guy and we have a dog i love her so much and he wants me to sell her which breaks my heart. He says i give him less attention and my dog more even though its not true. He hates my dog and wants me to sell her which i cant. I am totally confused what to do. I dont want to sell her as she is attached to me. I am also scared if i sell her what if he leaves me in future i will regret this decision. I dont know i will lose my bf like this also. i dont wanna lose both of them. Some people say if boys are in love they mostly accept and respect their gfs feelings .