Originally posted by ajewel

..any ideas on how to retrain the dog on the differences between outside animals (such as squirrels) and 'siblings' (such as guinea pigs)?
My other dog, Chance, knows that the guinea pigs are his brothers & sister and better be 'nice' or
otherwise he'll get a whap on the nose!

Also, Harvey doesn't seem to know any tricks at all

Last night on our way home he gave us a little scare.
... Chance is in Harvey's seat, and Harvey isn't in the truck!
He had jumped out of the window onto the tonneau cover!

... or at least to come when called.
There's your First Trick to teach = COME when Called!

He does a Nice SIT - when the mood strikes him.
Anothe "trick" that learns easily with treats.

SIT and DOWN (as in LAY Down) are good ones to practice with
Chance "assisting" as a role model ...

Have Chance accomplish the command and "Treat" him;
then help Harvey through the command and give a tiny treat if
he gets it at least partially right.

As time and practice march on; only give a treat if Harvey really
"gets it right" -
he'll be a lot more inclined to do it right when he sees Chance rewarded
for good SITs and DOWNs.

Cinder really enjoyed "helpin" Smokey learn his commands and tricks -
SHE could do them in her sleep and it was almost like stealing candy
for her to plop into a Sit or a Down ... didn't take SmokeMutt
too many missed treats till he cought on that "doin what She just did"
earned HIM a treat, too!

"Eating the Pocket Pets"??

Try a STRONG Leash tied to a HEAVY table ...
then sit yourself and a Lil Critter just OUT of Harvey's reach ...
"Reward" for gentle behavior ( or at least not foaming at the mouth)
till he begins to associate treats & praise with ignoring the Lil Guys.

But remember he's a HUNTING Dawg ... trying
to teach him not to "hunt" in the house may take a Long Time!