I've just attempted to do some quick research online about Avocado Toxicity in dogs..
What i found was... there is no real consensus on this. Some sites say it is bad, others say the leaves are bad.
At this point, until things become more clear, agree to disagree.
**Update** hmm, how about we all agree with the ASPCA Animal Posion Control Centre and thier list of Toxic plants? (avocado included)
http://www.aspca.org/site/FrameSet?s...nts/M01947.htm