Staying at my mums atm and her dog has fleas so I'm looking to buy some frontline. Can't get to the pets@home to get it atm, so can't ask their advice. Looking online it seems it goes by weight of the dog, but I have no idea what he weighs! He's a lurcherxcollie so he's quite tall, but super skinny...does anyone know what size treatment he would need? Also, any recommendations on the best place online to buy from?
TIA!