Really weird, bizzare, freaky dream. i have had this dream several times?

i am living in a large house and my family leaves for the day. it is only me and my siberian husky left in the house. i hear the washing machine running and don't remember anyone turning it on. i go to look and it is turning into a huge machine with razor teeth that spin like saw blades. there is a female riding it and shrieking like a witch. i hide under the table with my dog and my dog tries to anxiously to get out from under the table but i hold him in. the thing comes into the dining room and said "come out little boy" and my dog leaped into the mouth of the machine and killed the rider of it. but died in the process. im 14 and my dog has been dead for 5 years.