I finally got all endings so!
Ending 1 - accept Tony's toy
Ending 2 - go and get Julia to try an imprison Tommy while James is alive
Ending 3 - Fail at capturing the human and have Julia try and kill you, imprison her again and eat the dog food. To imprison Julia again lure her into the jail room with dog food and quickly go to the computer and type in the code again. Leave and eat.
Ending 4 - Capture the human while Sony is alive. For Sony to be alive make sure you stop him from jumping. Do NOT turn back into the dog.
Ending 5 - Capture the human when Sony is dead. Do not stop him from jumping for this. Turn back into the dog.