At some point, my cat started growling whenever she manages to catch her toys in her teeth. When she does this, she holds onto it while growling whenever anyone is within a meter or two. One thing that may or may not be relevant is that she's an F3 Bengal cat.
At first, I figured she was getting possessive of it, but I'm not sure if that's the case. If I try to take away the toy, she'll pull the toy, but if I actually take it away from her, she immediately returns to the standard playful behavior - and if she catches the toy, she growls again. While this is happening, she doesn't try to scratch or bite, and it doesn't seem to escalate in any way.
My question is - is it a normal part of how she wants to play? Or is it something stressful to her and I shouldn't try to take the toy? My initial assumption was that it's stressful (and that's what the other related questions imply, e.g. this and this one), but once I realized that she immediately returns to play mode after "losing" the toy and that it doesn't escalate, I'm not sure anymore.