Welcome to the forum.
The YOUNG AMERICA BULLDOG is a variant of the "standard medium" solid frame revolver meant to fill the lower end of the utility grade line-up. Not saying it wasn't well made - it simply was intended for that niche and filled it well - with over a million examples made between circa 1884 and 1941 and virtually unchaged during that time period.
H&R used the name "BULLDOG" exclusively for their RIMFIRE cartridge chambered revolvers - both the YOUNG AMERICA and the AMERICAN DOUBLE ACTION (larger frame.)
Your gun has a blued trigger guard and aluminum escutcheons on the grip panels, which indicates it was made after 1897. HOWEVER, I cannot make out a cartridge stamping on the left side of the barrel. If there it should read ".32 RIMFIRE" which means it is capable of handling smokeless/Nitro powder loaded cartridges and made in 1905 or later. If NOT stamped - it was meant to handle BLACK POWDER loaded cartridges and was made between 1897 and 1904. Check it out for markings.