I thought avocados were poisonous to dogs. Although yours seem to be doing it without ill-effects.
One of our horses picks them off the tree anytime he can, and so far no harm. But he's much bigger obviously than a dog.
(edit: have just done a quick google and found several pet sites saying that the risks are to heart, lung and other muscle from a chemical called persin and of gi upset due to the fat.
This is from Wiki...
QUOTE
Persin is a
fungicidal toxin present in the
avocado, isolated only recently.
[1] It is generally harmless to humans, but when consumed by domestic animals in large quantities it is dangerous. It has been suggested as a treatment for
breast cancer.
[2] The chemistry of persin is not yet understood, but it is similar to a
fatty acid, carried in an oil, and it leaches into the body of the fruit from the pits. Negative effects in humans seem to be primarily in
allergic individuals.
Pathology
Feeding avocados or guacamole to any non-human animal should be avoided completely. The symptoms include gastrointestinal irritation, vomiting, diarrhea, respiratory distress, congestion, fluid accumulation around the tissues of the heart and even death. Birds seem to be particularly sensitive to this toxic compound.
Pits may lodge in the intestinal tract of cats and dogs and require surgery for removal.
- In birds, the symptoms are: increased heart rate, myocardial tissue damage, labored breathing, disordered plumage, unrest, weakness, and apathy. High doses cause acute respiratory syndrome (asphyxia), with death approximately 12 to 24 hours after consumption.
- Lactating rabbits and mice: non-infectious mastitis and agalactia after consumption of leaves or bark.
- Rabbits: cardial arrhythmia, submandibular edema and death after consumption of leaves.
- Cows and goats: mastitis after consumption of leaves or bark.
- Horses: mastitis after consumption of leaves or bark.
- Hares, pigs, rats, sheep, ostriches, chickens, turkeys and fish: symptoms of intoxication similar those described above. The lethal dose is not known; the effect is different depending upon the animal species.[3][4]
No vet sites came up which makes me suspect it's not a really high risk, and dogs aren't listed in this article except about the pits being a foreign body. Did find a Jackie French 'recipe' for shiny coats mixing dry food and avo although I don't think she's really a dog expert ;-) All you'd have to do, imo, to get that effect would be add oil/fat to the diet, that would be the only way the avo could be having a direct effect on the coat. Not avocado oil though, the persin would be concentrated in the oil.