update with misc animal genomes

doc/databases.md

@@ -30,6 +30,20 @@ The databases do not need to be unpacked or prepared in any way after download.
 
 You can verify that they've been successfully downloaded (and view database properties such as `ksize` and `scaled`) with `sourmash sig summarize <output>`.
 
+## Sketches for human and animal genomes
+
+These include k=21, k=31, and k=51, at a scaled of 1000. Each file is about 110 MB.
+
+* Human (hg38) - [hg38.sig.zip](https://farm.cse.ucdavis.edu/~ctbrown/sourmash-db/host/hg38.sig.zip)
+* Cow (bosTau9) - [bosTau9.sig.zip](https://farm.cse.ucdavis.edu/~ctbrown/sourmash-db/host/bosTau9.sig.zip)
+* Dog (canFam6) - [canFam6.sig.zip](https://farm.cse.ucdavis.edu/~ctbrown/sourmash-db/host/canFam6.sig.zip)
+* Horse (equCab3) - [equCab3.sig.zip](https://farm.cse.ucdavis.edu/~ctbrown/sourmash-db/host/equCab3.sig.zip)
+* Cat (felCat9) - [felCat9.sig.zip](https://farm.cse.ucdavis.edu/~ctbrown/sourmash-db/host/felCat9.sig.zip)
+* Chicken (galGAl6) - [galGal6.sig.zip](https://farm.cse.ucdavis.edu/~ctbrown/sourmash-db/host/galGal6.sig.zip)
+* Mouse (mm39) - [mm39.sig.zip](https://farm.cse.ucdavis.edu/~ctbrown/sourmash-db/host/mm39.sig.zip)
+* Goat (oviAri4) - [oviAri4.sig.zip](https://farm.cse.ucdavis.edu/~ctbrown/sourmash-db/host/oviAri4.sig.zip)
+* Pig (susCr11) - [susScr11.sig.zip](https://farm.cse.ucdavis.edu/~ctbrown/sourmash-db/host/susScr11.sig.zip)
+
 ## GTDB R08-RS214 - DNA databases
 
 [GTDB R08-RS214](https://forum.gtdb.ecogenomic.org/t/announcing-gtdb-r08-rs214/456) consists of 402,709 genomes organized into 85,205 species clusters.