1.0Dog Food Advisorhttps://www.dogfoodadvisor.com/forumstheBCnuthttps://www.dogfoodadvisor.com/forums/author/pattyvaughn-2/rich600338<blockquote class="wp-embedded-content" data-secret="LkuAXA1MpY"><a href="https://www.dogfoodadvisor.com/forums/reply/34488/">Reply To: Can Heartgard plus make yorkie sick</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.dogfoodadvisor.com/forums/reply/34488/embed/#?secret=LkuAXA1MpY" width="600" height="338" title="“Reply To: Can Heartgard plus make yorkie sick” — Dog Food Advisor" data-secret="LkuAXA1MpY" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript"> /*! This file is auto-generated */ !function(c,d){"use strict";var e=!1,o=!1;if(d.querySelector)if(c.addEventListener)e=!0;if(c.wp=c.wp||{},c.wp.receiveEmbedMessage);else if(c.wp.receiveEmbedMessage=function(e){var t=e.data;if(!t);else if(!(t.secret||t.message||t.value));else if(/[^a-zA-Z0-9]/.test(t.secret));else{for(var r,s,a,i=d.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),n=d.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),o=new RegExp("^https?:$","i"),l=0;l<n.length;l++)n[l].style.display="none";for(l=0;l<i.length;l++)if(r=i[l],e.source!==r.contentWindow);else{if(r.removeAttribute("style"),"height"===t.message){if(1e3<(s=parseInt(t.value,10)))s=1e3;else if(~~s<200)s=200;r.height=s}if("link"===t.message)if(s=d.createElement("a"),a=d.createElement("a"),s.href=r.getAttribute("src"),a.href=t.value,!o.test(a.protocol));else if(a.host===s.host)if(d.activeElement===r)c.top.location.href=t.value}}},e)c.addEventListener("message",c.wp.receiveEmbedMessage,!1),d.addEventListener("DOMContentLoaded",t,!1),c.addEventListener("load",t,!1);function t(){if(o);else{o=!0;for(var e,t,r,s=-1!==navigator.appVersion.indexOf("MSIE 10"),a=!!navigator.userAgent.match(/Trident.*rv:11\./),i=d.querySelectorAll("iframe.wp-embedded-content"),n=0;n<i.length;n++){if(!(r=(t=i[n]).getAttribute("data-secret")))r=Math.random().toString(36).substr(2,10),t.src+="#?secret="+r,t.setAttribute("data-secret",r);if(s||a)(e=t.cloneNode(!0)).removeAttribute("security"),t.parentNode.replaceChild(e,t);t.contentWindow.postMessage({message:"ready",secret:r},"*")}}}}(window,document); </script> The amount of Ivermectin in Heartgard, if dosed properly should not be a problem for Shelties, Collies, Border Collies, etc. They can handle about 10 times the proper dose before reacting if they are positive for that particular gene, unless they are in the extreme minority. And there is a genetic test for that gene […]