Lost Puppy

We have been packing and boxing all day. Well, mainly the kids have played, and I have worked, but what else is new. When Lexie decided it was time for bed, she started looking for her webkinz dog and could not find it anywhere. She tore the place apart looking, was bawling in tears, etc. It got to be such a big deal with her that she almost got a spanking. It has me upset too because I know how much she loves it. So I messed up and told her that I was worried it might have ended up accidently in the dumpster. So she got so upset and I yelled at her and sent both kids to bed. I went out to the dumpster with a flashlight looking now that they are asleep in their room. Also checked the car. I don't know what else to do.