The local pound called me back. I explained what I wanted to do and he said if it was up to him, he'd say yes in a heartbeat. But he needs to look into the legalities (insurance etc) before getting back to me. He has kept my number on file.
The other pound - I spoke to a volunteer. He suggested I simply turn up one day with camera in hand and maybe can take some photos then. He said he'd talk to his manager about it (he sounded fairly keen), and that she'd call me back. I was busy at work yesterday and didn't hear back from her. I thought I'd wait until next week to recontact.
In comparison to the pound photos, I have seen some of the local rescue photos and they are very good. Some of these photos are of animals from the pound which has yet to return my call, so I am feeling a little apprehensive/intimidated. The smart thing to do based on your comments would be to contact the group, ask who the photographer is, and then contact them to see if I might be able to watch them work. But that takes a bit of courage on my part.
Thank you for your encouragement, frogoutofwater. It sounds like I need to get out there and connect a bit more and work from there. Have been thinking about it a bit more while waiting for people to get back to me, and have realised that I would only be able to really do this if the pound was willing to let me come in on the weekends, as I have a 2.5 year old who would have to come with me during the week, and she's not old enough yet to be phtographer's assistant. Something else to think about.
If the second pound says no, it may simply be the wrong time, and I may just work on my contacts/networks for a while instead, before venturing out there again when my girl is a little older.