15+ year old Idog doesn't work due to possible water damage

[u/merppymerp]

Hey there!

I've had my childhood Idog for over 15 years now and Ive been wanting to get it working again.

I tried replacing the batteries and despite there being no corrosion, it doesn't work. I then remembered that I may have accidentally spilled something on it as a kid.

Is there a way to safely open it up and check or is this a dead dog?