Caleb brings his horse, Rusty, to Heartland for treatment after the animal becomes inexplicably ill. Ty initially suspects a parasite carried by possums he recently rescued, but diagnostic tests eventually reveal the real culprit: pesticide poisoning caused by illegal dumping in Weber’s Creek.
Partners with Ty to provide medical care for Rusty, highlighting their evolving professional partnership. [S9E9] A Matter of Trust
The episode highlights the dangers of environmental negligence through the pesticide dumping subplot. Caleb brings his horse, Rusty, to Heartland for