LaTeva Nolad (Born to the Wild) is the first, and only, Israeli Wildlife Hospital and Rehabilitation Centre. It operates relentlessly, similarly to Wildlife Aid below, to rectify man's harm to wildlife. I volunteer at the hospital, and know the founder of the hospital personally and can tell you ALL donations go DIRECTLY to the animals. Unlike NSALA and The Humane Society below, which need donations always but are backed by their national public, LaTeva Nolad is in DESPERATE need of donations to keep it going. This sounds like I'm hinting at a specific charity, but I'm really not; I just know the centre well, and I know how bad the situation is.
Wildlife Aid is a British charity that helps injured and orphaned wildlife. Maybe even more admirable than their actual work (12,00 animals saved a year) is their view and motto--they don't interfere with nature, and only try to rectify the damage man does to the wild. You can become a member of Wildlife Aid, purchase a variety of merchandise, adopt a rescued animal, or donate as much you can. Wildlife Aid is currently in crisis since food companies have stopped their support of the centre, a devastating blow to the hospital.
The North Shore Animal League Ameica is the largest no-kill animal rescue and adoption organization in the world. It's also home to a Humane Education program. You can help by donating or adopting any pet, as well as signing up.
Although they are not a no-kill organisation, I also support the (very vast) efforts of The Humane Society of the United States that does excellent work with advocating for a better social policy for animals.
Medecins Sans Frontieres is an international humanitarian aid organisation that provides emergency medical assistance to populations in danger in more than 70 countries. It operates here in Israel as well and I have seen it in action and it is overwhelmingly wonderful.
Heifer International needs little introduction; it's taking an active part in ending world hunger. You can buy shares (or an entire gift!) to provide a family with a source of living, food, and a sense of respect.
Lastly, Save Darfur is a coalition inspiring action to put a stop to the slaughter in Darfur, Sudan. Here, even signing your name is an action--even if you wanted to only wish me a Merry Christmas, it'd take you just as long to sign up.
ETA:I am stupid and forgot to post a link to the Save the Albatross campaign. The problem here isn't so much money, though I know BirdLife is always in need of donations, but rather awareness. Wandering Albatrosses are my favourite bird, and they're facing the verge of extinction over something that can be fixed fairly easily. I'd really appreciate it if you could go and have a look and see the kind of problems albatrosses have at the moment, how we can help them, and maybe pass the link along to your friends?
Thank you. :)
CLARIFICASHUNS: I don't mean to put pressure on anyone to do anything, to get me anything, to donate anything if they feel that they can't. I'm aware not everyone is in the financial state I'm in. Also, I firmly believe and know that at three of the founders of the charities I listed above (Igal Horovitz, LaTeva Nolad; Simon Cowell, Wildlife Aid; Ben Sulliven, BirdLife) also believe that any action for a cause is a useful and admirable one. Passing on the links of these sites to your friends and family would be a HUGE action to take, and would make me very happy as well.