Do you have time?
Many of the fosters you get will need some degree of medical assistance,
so that will likely involve several trips to the vet for follow-ups.
Some may be too young to be spayed or neutered, so that will mean a couple
more trips to and from the vet. (Note: The majority of expenses related
to the vet will be covered by the foster group.) Add to that the
time involved in transporting the dogs to and from the foster group or
their new home and possibly to group adoption events (e.g., the guys you
see at pet shops on the weekend). You will also have to dedicate
some time initially to getting the dog housetrained and used to a new schedule
(although with some dogs, this is so easy it isn't worth mentioning.
Do you get attached easily?
Some people absolutely cannot help themselves, and that's understandable.
If you didn't love dogs, you wouldn't even be considering this. However,
fostering means giving a dog a chance to find a home. When you adopt
a dog rather than fostering, you derail the process. I love my foster
dogs (some more than others, I'll admit), but I have to let them go.
Although there have been several dogs I wish to this day I would have kept
for myself, that isn't part of the deal if I want to keep the cycle going.