Question on teaching a holding task

The Service and Therapy Dog forum is for all service and therapy dogs regardless of whether or not their status is legally defined by federal or state law, how they are trained, or whether or not they are "certified." Posts questioning or disputing a person's need for a service or therapy dog, the validity of a person's service or therapy dog, or the dog's ability to do the work of a service or therapy dog are not permitted in this forum. Please keep discussions fun, friendly, and helpful at all times.

Charlie- Chaplin

A day without- laughter is a- day wasted
Barked: Thu Feb 14, '13 9:55am PST 
Just wondering if anyone who's taught their dog to hold objects and bring them, did you encounter a chewing problem at first?

When I trained Baby he never felt the need to chew or be rough with items when he picked them up and brought them over.

Chaplin, on the other hand, seems to have an oral fixation and insists on chewing/being rough with what I ask him to get... Anyone know how to counter this?