If you are bothered by interruptions because of animal sightings, there is something you could try;
In the game main menu open "SETUP", at the bottom it will tell you where you can find a text file for advanced settings. Edit that file to configure if you wish to be interrupted by any, none or only hostile animals approaching. I'm not 100% sure, but I'd guess you need to quit and restart the game for the changes to take effect.
// NO - never prompt to abort if these creatures enter your view
// YES - always prompt to abort task if these creatures enter your view
// HOSTILE - prompt to abort only if this kind of hostile creatures enter your view
[TASK_ABORT_ANIMALS:YES]
[TASK_ABORT_HUMANS:HOSTILE]