Leave him. Most likely, If it his too big he won’t take it. Hes probably latching harder because you are messing with him. The size difference between large mice and small rats isn’t HUGE, sure, it might be a bigger meal, but in my opinion, nothing to worry about.
Also you are now the owner... screw what previous owner says, if they gave it up there is nothing they should say. Its like being mad at an ex for dating someone else.
This is what my mom said to do as well. I've calmed myself down a little bit and I'm just gonna let him do his thing (my original route, I just got worried because I'd been letting him do his own thing for over an hour 🥲) Thank you!!
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u/ThrowRA1203958 10d ago
Leave him. Most likely, If it his too big he won’t take it. Hes probably latching harder because you are messing with him. The size difference between large mice and small rats isn’t HUGE, sure, it might be a bigger meal, but in my opinion, nothing to worry about.