It’s based on a number of things, actually! There are different ways to transform outside of the moon.
The easiest way, though very pricey, is to raise a certain stat - one that I will talk about.
There is no morality scale in Doggone Days. There is a reason why; it is to symbolize the players difference from humanity. They are a werewolf, and thus not beholden to the same moral trappings of a regular human soul(if they even still have one). Actions that could be seen as bad moral choices are not tracked by a stat, rather, they have consequences with Wrenbrook’s townfolk, law enforcement, and Sam.
The stat, The Wolf, is a percentage. It tracks how much of your human mind is controlled by the instincts of a werewolf. It’s not a game of tug-of-war, but an inevitable decline. Meaning, you can’t lower it. It affects how you see the world; if people are still people, or just pounds of flesh, if eye contact is polite or seen as threatening. You lose your reasoning mind. But having The Wolf at full does not mean the end of the game. You don’t get a game over. It continues, it’s just harder to adapt and live as a human being.
As The Wolf stat increases, those who want to use their shape-shifting prowess can - to an extent. Only small partial transformations, such as calling forth claws, teeth, strength speed, and the myriad of senses, but not all at once. It’s very taxing, and it adds to The Wolf stat as the price. Though, it may not be much of a price depending on how you want to play the game.
Now, full transformations outside of the full-moon is limited to the form of a regular wolf. And there are rituals you have to perform, or items you must have to shape-shift. Such as a belt from the skin of a wolf, or a wolf pelt for example. These transformations differ from the Full-moon ones as they are voluntary. Your mind is not subjected fully to the intensity of werewolf instincts, rather you keep much of your intelligence but do not have the same supernatural abilities. And there is always the chance of becoming stuck as a wolf, as it is not as ‘natural’ to you, and if you wear the wolf pelt and someone takes your clothing(you need that to change back), you better hope you can find them.