Invermectin Sensitivity is a disease is which dogs become overly sensitive to certain drugs including invermectin which is found in some heartworm and mite preparations. Certain breeds are particularly prone to this disease: collies, Australian Shepherd Shetland Sheepdogs, Old English Sheepdogs and English Sheepdogs. In other breeds, excessive doses (10-20X the recommended dose) are dangerous. […]
Fortunately, while many poisonous plants exist, horses will graze on very few of them and usually only when forage is in short supply. Their size may protect them as well. With some plants, horses must consume a large amount over a period of time to have a toxic effect. Plant toxocologist Anthony Knight of Colorado […]
