Nice Job Breaking It, Hero: If he had listened to Big Mama during the "Lack of Education" song or had gone back home when Copper told him to, Chief wouldn't have gotten injured and his relationship with Copper probably wouldn't have become strained. Oh, and he'd probably still be living comfortably with Widow Tweed.
He would've never met Vixey though.
Papa Wolf: Todd would normally run from Copper and Amos when they were after him. However when they almost harm Vixey he fights them off with sheer ferocity. Even wounding his former friend.
Too Dumb to Live: For disregarding Big Mama's "Lack of Education" lesson, which was complete with animal skins and implements used to trap/kill wildlife.
Not only that, but he completely blows off Copper when he tries to tell him to go home. And later, he ignores Vixie's warning about the forest being too quiet, which results in him nearly getting trapped and both foxes being smoked out of their den. For a fox, Tod sure does have his fair share of these moments.
Satellite Love Interest: She has barely any personality, due to being introduced around the time Tod was put in the nature reserve, and meeting and immediately triggering Tod's affections within two minutes of her first appearance. She is implied to have known Big Mama for some time from the sound of her introduction, but that's pretty much all we know about her besides the fact she and Tod love each other.
What Happened to the Mouse?: She completely vanishes during the bear fight scene, showing up again only in the very final scene with Tod.
She kept running when Tod turned back to fight the bear.
Anti-Villain: Amos Slade is a Jerkass but not a bad guy, and he doesn't see his career of hunting as a bad thing. The only time he actually does anything illegal is when Chief almost dies thanks to Tod and he's determined to get Tod's pelt even though hunting isn't allowed in that area, but backs off when Copper shows Amos that Tod is his friend.
Bad Boss: Subverted. He's not a nice person within any stretch of the imagination, but he cares for his dogs. He lets Chief sleep inside the house after the dog is wounded and is willing to break the law to avenge Chief's near-death, which he blames on Tod.
Berserk Button: Do not mess with this man's dogs. You will regret it if you do.