Мistrustful muskrat

My dog Sayan and I were resting sitting on the shore. Suddenly a few meters from us, a muskrat emerged and swam to a half-sunken tree trunk. Climbing the trunk a muskrat looked at the dog Sayana for several seconds, apparently trying to determine whether it was possible to trust it. The muskrat decided that it was impossible to trust the dog and dived into the water.