No offense but I wouldn't use it.
Keep in mind "The Animal Rescue Site" is a purely commercial retail site and not a charity site.
They're part of "GreaterGood.com" and they do not disclose how much they actually give to charities and they're not listed with CharityNavigator.org or CharityWatch.org.
This is from a site (seriousgivers dot org) that investigates "charities."
"GreaterGood.Com is a commercial entity, not a charity.
I found no clear information on how much it raises, or what portion goes to charity programs (vs. GreaterGood.com sales, administration and profit).
If you want to support strong charities doing work you care about, give elsewhere (not at GreaterGood.Com).
There’s no telling how much of the money raised through GreaterGood.com goes to any particular cause."