I trained my last Dalmatian to eat corn off the cob by using the key words "little bites" so he would just use his front teeth to pull the kernels off and not try to bite the whole thing....
I saw that from you a while back. Holley loves corn this way! I leave a couple rows for her. Once in a while she tries to steal the cob, but does the nibble pretty good. I also give her orange slices same way and she will get the inside and not the peel