I wish i could help but im stuck too if i find out ill tell u.

go to the zoo and then it will go( on it's own) to the alligator pit and then go to the
hole in the back. inside the hole, fallow the trail until you get to the first split and
take a right. if you go ahead then take left.

oh, i forgot, you don't need a specific time. but if you do then noon is when i did it.

.... just inside the entrance to the top left snowfield (where dean is) in the morning.
Try it and see!

mecha dog is not where you say he is "i found him" be specific

what items where on the ground, the time of day, and the proper name of the place(as in
snow fields or town hall)

You can actually find him anywhere just search!!

I found mecha dog the second time near the area where the ski lift is. I don't think you
need any specific items there. I went in the evening. Try going at different times.

i think the location is different in each game but there are only a few locations. my
(untested) tip is to save before going into dr.n's lab the 2nd time. then head up to the
ski lift area. if hes not there restart. THIS TRICK IS UNTESTED.

p.s. i found him in the snow field. right when you walk in to the right he is there, at
the corner of the glacier lake. in the noontime.

i dont think time really matters though. just keep scanning for him, hes got to be there.

and remember hes grey and robotish, so he might camouflage a little.

Where is he for the first time?