Hallucinogenic

I'm at my own house party, i have a few family friends over and I'm just sitting with them, until i hear my cat hissing and crying out. I run outside and find it being attacked by this wild dog in the bushes.. but i don't really get a close look at it..
it's been happening for a few months now and I'm getting sick of it and worried for my cat. I put my cat inside and i go back out and spot the dog, i notice that the dog is a skeleton from neck down, (but this doesn't seem strange to me) anyway, i fight with the dog and kill it by strangling it, and as it dies its face kind of like melts (it was disgusting), i freak out once I've killed it and pick it up (its really stiff like a decoration stand kind of thing) and i put it on the side of my house and went back to the party.
When i go inside i notice i have lots of blood on my hands but before i can wash it, someone starts talking to me. After I've washed my hands and start to head outside the same person follows me from the bathroom outside to see what im doing, i walk around waiting for her to go but she wont and she starts to walk to the side of my house where the dog was put, i try to distract her but she wants to go there to see something.
I prepare myself for an explanation, but when she said nothing i had a look myself, THE DOG WASN'T THERE?! i look around more, and notice that in a pile of cans, paints, glues ect that pieces of the dogs skeleton where placed around it, but it was carved out to look like decorations. I picked up a piece of the skeleton and see that someones made it look like candle holders, or pieces to a bed ect ect. I dont know how its happened and im left confused.