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Welcome to the forum. If I were to guess you may have found a tombstone for a dog. However this is just a guess. The first photo is the year month day 25 (year) 11 (month) ?? maybe 30 (day) . It's hard to make out all the characters and numbers. second photo is 土佐 tu zuo (土佐犬) which means tosa a name for a Japanese dog. The last 3 characters are a name however I can only make out the first 2 and they are 東鍚 dong yang. The stone may have been written by a japanese person or a chinese person.