FREE: PINK OLEANDER SHRUB: OVER 50 SEEDS!! FRAGRANT & BEAUTIFUL! 7 DAY AUCTION!

Found a website with a list - Oleander is not on the list but it is mentioned in the paragraphs before the list:
"Resistance of the plant to deer is related to the availability of other food. If there is an adequate supply of natural browse in the deer’s usual feeding ground,
the gardener’s ornamental plantings may be largely untouched; if natural food supplies are low, there will be an increased browsing in domestic gardens; if
there is an extreme shortage of natural food, few if any plant species are totally resistant to deer. A heavy deer population also increases competition for food,
with the result that plants relatively unpalatable in an area where deer are not numerous will be readily browsed in an area where deer abound.
****Various factors can make a plant resistant to deer. Many of the most resistant plants (such as Oleander) are poisonous, some at all times and others only at
certain stages of growth. Palatability of non-toxic plants also varies with plant age and with the seasons. Experience in years of drought shows that “lists” are
of little value—these children of nature will eventually become desperate enough to eat (or try to eat) anything!!
Because of these factors, the following list of deer-resistant plants should be considered as a general guide only; under conditions such as those mentioned,
deer will sometimes browse some of the plants listed—as they will sometimes avoid
plants not listed."****
http://www.orchardnursery.com/pdfs/nurserycare/10-deerlist.pdf

Noooo, they are NOT safe for dogs. :/ Every part of the plant is toxic to humans - believe me, I know about my doggies getting into my plants, but my silly big furry baby doesn't eat them - he's just a trampler. If there's any suspicion that your dog might decide to snack on them, I wouldn't plant this shrub/small tree where your furry little baby could get to them.