I hate getting pedantic on a side note, but the T-1000s (improved model over the Arnie ones) were detectable by dogs, and they weren’t made of anything human. There’s a scene in T2 where the T-1000 is on the phone with a young John Connor, and John asks why the family dog is going nuts in the background.

My apologies too but I’m referring to terminator 1 so the Arnold version not the t1000. Reese describes this to Sarah the night John was conceived iirc.

Isn't that mainly because the T-1000 had broken in and killed his foster parents at that point?