Can you remove bite marks from foam?

I bought my boyfriend a foam Minecraft diamond sword and pickaxe for his birthday, but my ferret somehow managed to climb on top of my dresser, and she left two tiny teeth marks on the foam sword.

I really don't want to give my boyfriend a Minecraft sword that has ferret teeth marks indented on it.

I'm really doubtful, but is there any way to remove bite marks from a foam object?

No. There's really no way. And if you try you will probably make it worse. IF and thats a big IF he even notices i doubt he will care. Chances are he will think its funny. Plus hell probably be playing with it and its gonna get dinged up anyway.
if he throws a fit about it. Then find yourself a new Boyfriend because thats pretty immature.
after all its a foam sword.

If the bite pushed down the foam, try to use a small screwdriver, a needle, or something of that sort to pull the foam back up into place. Beyond this, craft paint may help, but you'll need to get a kind that won't crack when the sword bends. If it's beyond hope: battle scars.